I grew up during the dial up era of internet and remember how insane it was each time the technology improved, broadband, dsl, fiber etc.
I wouldn’t expect pages to instantly load, but I have to imagine all the data farming is causing sites to be extremely bogged down.
Probably not. I think the timeouts are set up differently or something. Back in the day even if you had 1.2kb/s dial up internet, you could reliably load webpages and all their css if you were patient. Nowadays, if your internet speed dips by even a little bit, everything stops working and being patient about it only results in error screens.