. This type of advices should be taken into consideration if they are given ONLY by Deity players.
Those are StarCraft 2 and Dota 2 (actually WC3 and SC:BW also but they are too old).
Why is that happening? Because the developers take into account only balance feedback made by top 1% of players. Of course they say that they value all feedback, but i know for sure that this is not true.
I can say definitely that your note on SC2 is wrong. Many balance changes are designed to address concerns at the lower levels and are not a big factor at professional play. I play SC2 and keep up with a lot of discussions. Now your right that high level play is definitely a greater factor, but not the whole.
Ultimately what makes Civ different than other games is that the game you are playing is the not the game I am playing. The diety experience is fundamentally imbalanced, it is designed to give the AI a massive advantage. If would be the equivalent of playing baseball against a team that can field 10 players instead of 9. The experience you have is therefore fundamentally different, and so your response to balance changes is also different.
A great example of this was a large debate about Authority some time ago. Lower level players found Authority to be weak, Diety players found it incredibly strong. The reason....Diety players fight against a mega crapton of units...so that culture on kills really stacks up. That has nothing to do with how good a player you are....it is a fundamental difference in game experience driven by the difficulty level.