I think the end state of this will be when Trump links prosecutions like this to tariff deals, and Kier Starmer will have to choose between mean words on the internet or further damage to an economy in already bad shape.
He also has the charisma of a wet sock, which doesn't help.
If there were elections now according to the current projections Tories would get less seats than the Liberal Democrats.
4chan is also the originator of the Pepe the Frog memes, and claims (whether people believe it or not) to have meme-d Trump into the Whitehouse in 2016.
I think neither a murky ideological battle nor a decade-old debt matters much to the president. And it probably matters that the UK made a tariff deal already, so changing terms would be a big act of self-sabotage.