This is so dumb, what is he thinking? What's the angle?
Dumbness aside, Twitter is only usable if you block all of the blue check spammers who add nothing to any discussion.
Maybe he's doing it so you can't block blue checks? But it still doesn't make a whole lot of sense.
My understanding of how this works is that that left one is real accounts making real comments, at least in the majority.
Then when the link gets reposted, either by a bot or naturally, potentially depending on the title, the bots scrape the old comments and post them.
It's content farming. And Reddit is probably okay with this.