It’s not a dichotomy, though.
There have been plenty of protests blocking traffic, and this protest blocking public transport. I get your point to an extent, and this is definitely a controversial way of doing things, but people arguing that this is a protest that is legitimate specifically aren’t saying that we shouldn’t block vehicular traffic as well, so I think it’s reasonable to not portray those arguments as such.
edit just to say if I’m being a bit aggy, let me know. I’m trying to be less argumentative, but I definitely have a tendency to go off on one, which isn’t great, that so yeah… lemme know