I decided to see what the mainstream media sites like X are saying about the UK protest and the top post is a communist talking about how there's 1000x as many counter protestors protesting the evil Nazis to defend Muslims.
It's all theatricks though with fake videos and fake descriptions of the videos all meant to demoralize. The fact a platform like X is full of this stuff is not a good sign at all. The username of X is pretty much all fake and gay.
X is what people use as the example for anything. I give you two X and you give me Y. X as a standalone will show up everywhere on the internet so it becomes much harder to narrow down whether the X mentioned is twitter or just X as a stand-in for something else. This throws off people's ability to quickly gather information specific to X/Twitter from data mining.
That's the only possible explanation I can think of for choosing X.