I'm wondering how much worst it is since we already can track people pretty well with cellular data now. Sorry if I didn't make that clear, seems like they can already do all those things. How much worst can it be?
I got my own room in my house with it, back in the 3G/4G days. I'm not sure what modern software and hardware can do it now, but I'm pretty sure it's even more accurate even without 5G.
I am sure they were able to do it without it, but others can interfer. Triangulation was already a thing in the courts.
https://www.eff.org/deeplinks/2018/06/victory-supreme-court-... It's in Carpenter vs US, for deducting he robbed a store from just the cell phone signals.