I could not answer the poll, just annoyed me, watering down Pantheons like this is not good.
It does depend on your difficulty whether you get it and whether you want it.
For a start it is so early now that you tend to get it before you can build a settler yourself. You do save yourself 1 pop (not a big deal when you are only at 2-3 pop because the growth rate is higher at lower pops) however you now are building your next builder at +20 production. Of course you can effectively cheat by SHIFT+ENTER but that is clearly bypassing the games intentions. It is an early benefit and you cannot underestimate how much value that is. The thing is a settler progresses your entire civ, not just the culture portion.
... and what is this god of the open sky always weirdness? you saying you would take that always over Oral tradition?
Seems like you do not play religious and dance the desert paths, nor do you play coastal where the god of the sea is king.
Have you ever appreciated how goddess of the hunt has changed and is often hard to turn down. I mean that's 2 builder charges per tile early, goodness
So its not easy to measure all of these up against each other. I think Religious settlements is still likely best in most situations but not all. For example if you have 2-3 military CS's locally the value of it decreases because it is so much easier to build settlers just like Open Sky is not so strong if you have 2-3 early culture CS's and or natural wonders/culture tiles.
... and no God of the open sky does not pay off in the long run. You start with say 2 culture and by T100 maybe have 10 culture off it when you have maybe 100 culture over all and then at T150 you have 300-400 culture of which the open sky may give you 15. God of the Open Sky and Oral Tradition are culture burst early types but adding up their value toward PP when you tend not to have a lot of builders is limited.
I just think its not simple and a key thing is if you have a glut of something like making easy settlers then you are probably doing yourself a disservice by not taking something else but hey, respect your choice and all that.
I personally dislike earth goddess because it stops me placing districts in the places I should but I know I am wrong to think like this, we all have our little weaknesses. God of fire on the other hand was awesome even with only 3 active volcanoes... and you tend not to put districts there,