“For modern people with names ending in “s,” the correct possessive is made by adding “’s” to the name.”
I’m almost 70, so am not a “modern” person. That’s what we were taught if the name ends either in S or Z. Just add an apostrophe, or an apostrophe plus S.
It’s common for people to say “Me and Sally went to the park”, and I guess that’s accepted now. Drives me insane.
Things change in half a century!
Poor grammar from TV. I will use it in a joking manner, once in awhile.
And in the gangsta talk. I actually heard a ridiculous pronunciation of “buttons” on ABC about 6 months ago. Astonishing. I think it comes from a “children’s book” that intentionally teaches it that way. Incredible.