Is punctuation use no longer taught in schools? Not referring to here.

Actually, even my sister who's in her late 40's doesn't use punctuation.

Yes, I am somewhat of a grammar freak, but by no means perfect. I also totally get auto-correct flaws........BUT having 20 lines of text without any commas or periods???? Shiver. How can anyone take that seriously? I mean, heck...At least use "...". Lol