We need a Blank State option when starting a new save.

100% it would be so helpful. I also think it could still apply to apartments. All The Sims team would need to do is make all of the apartments empty shells.

I'm not overly sure they would give us an option to turn off Townie generation since the game has to generate new Sims for the special NPC Sims in the game.

I can see the merits of something like this SimulationBuilds​ in particular for test saves. For my test save I went through and wiped loads of lots and households manually. Playing on console, storage is important and less builds and households in a new save could be helpful in some circumstances. It could even be in Game Options along with a toggle off new Townies option that would also really be much appreciated. There could be a "Start with Blank lots" checkbox for example. Obviously it wouldn't work for apartments, but for lots it could be useful and would add a degree of flexibility, especially as you can't delete lots from the world maps and have to load each one to bulldoze it.

I don't like sticking unknown files into my games. It's one of the reasons I don't play with mods or CC either. 😅

If you are on PC, there are plenty of save files you can download. There are a few creators that have shared empty saves. You just put them in the saves folder and you automatically have an empty save.