If those "popular websites" are the likes of Facebook and Instagram, I don't see that as a big loss. That being said, I find that most of the Web works just fine on Tor, so it's certainly possible. Most of the issues seem related to the (known) the exit IP being overused or identified as Tor.
Most of the web works with Tor, but to make tor successful at the things it is intended to do you have to disable JavaScript.
This kills the internet.
> If those "popular websites" are the likes of Facebook and Instagram, I don't see that as a big loss.
Personally I wouldn't mind either but my point is that they probably want to cater to the average person, and not just security conscious tech savvy people, and if that's the case, then you really can't exclude FB/IG/YT and others from working properly in your browser.