They're not supposed to do anything, although calling them cringe would be a step up I guess. You seem to have this idea that the soyniggers are the next generation of the hackers on steroids that Fox News thought 4chan anons were, when actually there is only one major hack attributed to a single soynigger and that was an exploit of a flaw in a website that hadn't been updated in 10 years and whose owner is perpetually absent. The fact is no one has hacked 4chan again, despite the entire source code being leaked.
Let's say Josh pissed the soyniggers off, what would they do? Make fun of him? They already do that. Dox him? Everyone knows his face, his name, his mom's address, etc. Spam the forum? Nothing that can't be quickly deleted. Even the epic raids they do on 4chan from time to time are promptly deleted by the jannies and the most they achieve is disrupting the discussion in one thread. Oh, but they can hack Kiwi Farms, because if one of them hacked 4chan, that means they could all do it if they wanted to, right? Again, no, because Kiwi Farms was hacked years before the soyniggers even existed, and still has many enemies DDOSing and undoubtedly trying to hack it every week, so it would make no sense for Josh to be afraid of a few zoomers with too much free time.