I see what you mean. Traffic is a really important part of the game and people (including the modding community) seem to focus on it a lot.
But I do think there's a lot of freedom in terms of how you play and shape the game using mods.
To me CS is more of a weird mix of Factorio and a bonsai tree. I need to tend to it from time to time, slow down the gameplay and trim here and there (plop a new neighbourhood or a small detail). Fixing traffic issues is a small part of it (in my case).
I loved SC2000 and SC3000, but now SC4 (edit: SC4, not SC4000) feels just really ugly.