Exactly that. It would go something like this:

"ur all letting the mexicans take our jobs,,, all u libruls are dumb,,, u hate Trump,,,"

"I don't agree with what you're saying. Also, you're using commas where you should be using periods."

"dum librul,,,trump 2024,,, MAGA,,, get a brain moran,,,"

(And this is how I find out that Lemmy automatically converts three commas into one comma unless you tell it not to.)