Yeah, sort of. I also use “yous” frequently as part of my dialect regularly. But it’s certainly an informal usage that I would not normally use in written communication.

I actually suspect, though I haven’t investigated it enough to be confident, that there may be something else going on. That there’s possibly a difference—in my dialect, at least—between 2nd person plural “multiple specific people” and “a general large audience”. And that “yous” might only be appropriate in the former.

Yeah, the catch here is that it’s a feature that my native language does at least sort of have, just applied in a way that makes it not clear. When it’s a feature I’m completely unfamiliar with, I’m more likely to be on guard for it, if I’ve learnt it. But here I didn’t even think about it, because it was an element I am familiar with, so I never second-guessed my intuition, even though that intuition was wrong.