I think it will depend on your route and the time of your commute. I see fairly distinct behaviour at different times on the tube & Elizabeth Line: come in or leave late and it's full of people who are much less considerate, go in with the majority and there's a bit more social pressure against being inconsiderate.
I also never see this behaviour, but I pretty much only use the tube for commuting at peak times. I think commuters are generally better behaved. The sheer density of people means that anti social behaviour will get angrily shut down very quickly.
It may also be highly dependent on which direction you travel. When you travel east from the city, you get totally different demographics than when you travel west.
I've not noticed that correlation at all. I just wanted to see who was brave enough to actually speak their racism or whether they'd just suggest it in a cowardly way.
Sorry, nonsense. I use the tube several times a day and it's a real rarity.
I do worry about the tube becoming a cacophony of phone calls, but really? Everyone message now anyway so I reckon that'll be a rarity too.