well i mean you are being uncharitable. This is a tiktok, not, like, a paper. “Kind of true” doesn’t mean “absolutely true in all cases across space, time, and other universes”. Yes, he did misidentify “y’all” (it is second person plural) but that just changes what the statement should have meant to “chat is used as a second person plural pronoun”.
I think this analysis is about the usage of “chat is this true/real” outside of streams. Like if someone said out loud “chat is this true” to nobody in particular. Or in like, a meme or something.
if you used “y’all” to refer to the groups in these examples, “y’all” is a pronoun.
Chat is a metonym (not a pronoun) when you are referring to a group of people in a chatroom, real or imagined. That’s part of the new usage. What’s also part of the new usage is using “chat” but you aren’t thinking about the people you are addressing as part of a chatroom.
Plus we gotta examine the underlying context of how this usage started and how it has evolved. So it starts not as a pronoun when streamers start using it. Then it mutates as people start saying it in real life, outside of a streaming or chatroom context. So let’s say a young child hears someone say “chat, is this true”, and, without looking up what this means or the context, just starts saying it, without knowing what a chatroom is or without a specific audience in mind. I think at that point it becomes a pronoun.
Anyway, none of this is anything to get heated about.