Your last statements aren't accurate.
I played a lot (and still play) Civ3. It includes a check box for "culturally linked starting location", but most maps are random. One has to explicitly choose the Earth map. Playing something like TSL is a choice, not the default. Although I played less Civ4, I believe that playing a random map was also much more common there. Choosing an Earth map with an approximation of TSL was a choice, not the default.
More importantly, Civ3 had large stacks and rewarded stacking. The AI players were a real threat, especially with their bonuses at the highest levels.
Civ2 had stacking, but also had "stack death" -- if any unit in the stack died when attacking, the whole stack died. I hated that mechanic; I really enjoyed its removal in Civ3.
I fully understand that many players (and folks here) got their start with the franchise with Civ6. Thanks for caring so much, that you've become a Civfanatic! For my part, I love exploring a random map. Playing on a TSL map is much less fun for me; I can see how those who love it will be disappointed that it is a less prominent option in Civ7.