Thing is, its not going to change, Total Warhammer literally had stacks and stacks of DLC, hell some Total War games didnt even have red blood in them unless you paid to have the red blood, and the less said about the DLCs for things like Europa Universalis, Heart of Iron, Stellaris, Crusader Kings, Victoria etc the better, all of which were good games even without the huge changes and additions to core mechanics in many of those DLCs. Doesnt make it right of course but it does point to the reality of the market.
The crux of the current situation is that people will fall into 1 of a set of groups and will vehemently defend their choice of group and endlessly reinforce their choice of group against/to people who are in one of the other groups
Group 1 - People who dont like the way Civ 7 is doing things and will flatly refuse to buy it
Group 2 - People who dont like the way Civ 7 is doing things but will buy it anyway
Group 3 - People who arent sure about some of the Civ 7 changes/way Civ 7 is doing it and will wait and see what the feedback is like before buying the game somewhere down the line
Group 4 - People who dont mind the way Civ 7 is doing things, believe that they will still get their monies worth and will buy it
(I'm in group 4)
The important thing is to be happy with your choice of group and hope that everyone else is happy with their choice of group