Seeing Metatron in relation to DSP is the last thing I expected. It's a great historical channel with some based takes opposing woke academia's attempts to rewrite history lately.
He has another channel with a linguistic focus, since he himself is Italian, who learned and taught English, Japanese (lived there for a while too) and possibly more. He's a bit of a weeb and a HEMA enjoyer.
He has a dramatic flair to him that some might find cringe, but I got over it eventually. He's fairly knowledgeable and makes decent content.
Metatron probably just saw him randomly playing the game he was interested in or something and found it entertaining enough to sub, doubt he's aware for all the drama or who DSP is, but I get the feeling it's only a matter of time.