[LonePalm]

Y'all is singular. The plural is all y'all.

WWG1WGA

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

[WaltStuart]

Born a Texan.

Don’t recall Texan’s being so fussy about such details of ‘Y’all.’

And most seem to think that ‘all y’all’ is just too many words to bother with.