Except his tone, the guy actually knows what he's talking about.
No pain no gain. Pain is a part of growing. Keep in mind OP is doing a Prince walk through on his own will. Try to be nice. Players don't need to hit everything perfect like in Deity. And to OP, if people actually bother to look at your saves, they're prob really trying to give you advice on areas where one can improve. So what if their tone is not constructive? Just rephrase it for yourself. The action they've taken is enough for one to appreciate
Whiping gives immediate production benefit, and the building wiped gives immediate multiplier effect in science/culture/production. These multipliers start immediately while the city re-grows into it's original size. Rather than staying at that size and waiting for the building to be built. In OP's game for instance, he did try to place city to block AI off. Nonetheless his culture buildings come up too late thus allowing neighboring AI to build a city right next to his and gradually taking his workable tiles away from his 2nd and 3rd city. Granted OP was trying to build an army. Then execute it. Take Germany out so its cities aren't stealing tiles away from you.
Anyways, enough about whipping, it's a free country. People can play what they want.
In terms of Granary, even if a player can't whip well, he's got to at least recognize the benefit of growing faster. Early granary is very good especially at 1/2 of the cost. Even if you don't whip, the earlier you reach your happy cap, the earlier you can have more citizens working for you. One can always hold growth at max if whipping is not your thing.
And lastly prob OP can spend some time construct a plan base on leveraging the leader trait and the initial map.
Good Example of Map analysis/plans at Turn 1 The point form stuff DMOC had near the end of his 1st post. Get into the habit of doing it and you will be seeing more details very soon, yes even at turn uno.
But in terms of the game itself, lots of more experienced players are giving advice based on anticipation of what is going to happen. Most of OP's moves are so far based on reactive instincts so far. The decision to attack Germany so late for example. Had OP build the necessary culture buildings to protect his tiles, Germany would get the short end of the stick by now with city revo's. It would be easy to take Germany out early without a source for any religion, thus no culture defense bonus. If I were the OP, with the military advantage I wouldn't waste time with spy on Germany's single Iron source. Prob don't even need to destroy the improvements. Also, why are we researching Currency when its something Germany can provide for the 10 turn peace break we can use to heal our attacking forces. Nothing personal, but statements like "tradeable soonish" can basically describe every tech in the game.
Now in terms of the Greeks. Because of Athens, you will prob be getting a great Prophet soon. One thing is for sure, your first great person will very likely not be a GS. You might want to finish Alex or at least take Corinth - the funding place of Confucianism. You can use the GP to build a shrine there. Looking at the geographical location of other religion founding place, it's likely that Gilgamesh has many Confu cities. It's prob a good idea to take out the little ones first (Germany, Greeks...etc) before taking on Gilgamesh soon.
Lastly, can OP elaborate on the purpose of:
-be nice to my religious chums
-Spread my religion to all my cities
Why be nice to Confu/them if you are going to "Turn the world blue."
Why spread the religions if you don't have the shrine in your plan. Oh, okay, you are using Organized Religion. Why are you in Confucianism when only 1 of your city has that religion? Why are you in OR if you are not getting the 25% bonus in your cities building buildings (ie. Great Library, Courthouses)?
Musa is spreading Jud for you. All of Germany's cities are Jud prep'ed.
Convert to Jud has more benefits just because of Musa's Techs, and your military superiority over the Confu nations.
Even if spreading Confu is the way to go, why aren't you in Pacifism while building units and missionaries? Oh ya, you don't have Phil. Why not keep beating the ___ out of the Greeks until they give it to you?
Now to the Musa' side. Musa has both Civil Service and Theology. He prob had a head start on paper. Not sure why you are spending time researching Currency while planning to attack the Germans whom already has it. You prob need to start your Lib race soon. And you decision not to side with Musa in religion means you prob won't be getting those freebie techs.
I might be wrong on somethings. It's rather late here, my brain isn't working. Hopefully you have more ideas on how you want to plan your next 100 moves now. Cheers and have Fun

I think you've won the game already. Just a matter of how high a score you can get from now on.