Marx is being juxtaposed here because the article the author is addressing did that; he’s not equating the two, nor is he trying to legitimize lobster man (the dude’s already gotten on mainstream platforms and has a fuckton of fans—that ship has sailed). The CurrentAffairs audience is expected to already be familiar with this guy on account of the fact that it’s a niche libertarian socialist magazine that writes critical pieces about him every so often. The author agrees that he’s a charlatan and intellectual fraud that peddles reactionary bullshit to depressed young men.
If you want to do a deeper dive into why lobster man sucks (or share other pieces that do), then that would be a good contribution to the comments section here. Or post it to the beehive, provided that it’s socialist critique. Either would be welcome.