It would benefit from a period, and I can't tell if they're trying to be sarcastic, but the use of y'all is fine. Y'all is an American-English word most similar to the Spanish vosotros. Y'all's-selves is a more specific dialect mostly found in the US south east, but it is a word too. Y'all fills a hole in the language and I don't get why people hate it so much. Y'all's-selves really only serves the purpose of adding an emphasis on the collective nature of yourselves.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

Just FYI, y'all is pretty much confined to the US South. You almost never hear it in other regions.

That's also why there's so much hate: because "y'all" is so strongly associated with the South, and the South has a bit of a reputation in the rest of the country. Some of which is deserved and a lot of which isn't, but it is what it is.