No. I build district in every city almost as many as I can.
The one exception to this is the very early game. Roughly for a time equal to the duration of the Ancient Era I'll prioritize other things. Mostly because I'm using my capital to expand by building Settlers (and maybe a trade route and a builder or two) while my other cities are still building their city center buildings, which I almost always consider more important than a district
True, but you still want to plonk the district down to lock the cost, even if you dont finish building it yet.
Also one important exception is the instance where you get the opportunity to secure multiple high adjacency holy site spots from a pantheon, then getting holy sites down quickly becomes extremely important so that you dont miss the window of opportunity to abuse work ethic and monumentality (to the point that I personally skip almost everything else, because the payoff is so huge).
I'd even argue that lots of players overvalue campuses early on, to the detriment of their expansion as they dont have the industrial base to reap the benefits of all that science yet (this applies to single player of course).
The more i play i find myself not building them. Id rather build settlers, builders or units. I do like trade routes so i do build harbors and com hubs.
Can u even win a game like that...even in the lowest difficulty setting?
Domination.
Germany is an absolute powerhouse economically because you can basically have whatever districts you want AND the IZ is half off
IMO Germany is overrated. I hardly ever hit the district limit anyway, so that's rarely an issue. It seems like in GS there are just too many ways to increase your pop cap. In Vanilla it was more common to hit the pop cap, so Germany seemed relatively better. But a cheap IZ is hardly worth it IMO, especially since, in many cases the Hansa is worse than an IZ in terms of the bonuses it can get. Spain is 10 times better than Germany, as are many other civs IMO. Yeah, I really don't understand the appeal of Germany, especially in GS.