Because he was just a random thug who isn't part of a group,
Speculation - how do you know he isn't part of a group. And anyhow, what do you mean by a group. As I've mentioned before things have moved on from being a member of EDL or BNP to being a member of various private messaging/social media channels. Do you know for certain that he wasn't part of those groups NS?
and probably follows Yaxley Lennon and similar on X.
X isn't the media of choice for far right groups and their organisers - so he might indeed follow Yaxley Lennon, but may also be directly or indirectly linked to the Telegram channels that were key organisational routes for the rioting. Correct me if I'm wrong, but I don't think Yaxley Lennon gave out the kind of organisation details that were being put out by others on Telegram.
To help you out saying he's just a random thug doesn't mean he just turned up at random, though there were plenty of comments on X immediately after Southport from people saying they were going there, and this was before the misinformation about the murderer.
Err so what you seem to be saying is that he didn't just stumble across a march heading for a mosque in Southport at random. And that he made a very conscious decision to travel a considerable distance to be part of that march - i.e. very deliberate, rather than, random decision making process.
So why don't you just drop the 'random' bit, which trivialises things - there was nothing random whatsoever about the events leading up to his decision to travel to Southport to join the riots.
So once we've dealt with your backtracking with are left with the conclusion that he was a thug rather than a random thug - wouldn't disagree with you there. But also I'd add that he was a thug whose thruggery was very clearly organised.