Apostrophes in last names

I have to come here to vent because I saw another neon sign as a wedding display with an apostrophe in the last name to make it plural. I was at a wedding a few years ago with a nice, high quality custom neon sign of their last name and it had an apostrophe in it. It’s so embarrassing. It’s even more embarrassing that people don’t care if they are illiterate, and it’s actually considered socially unacceptable to correct people. I’m so glad nobody gifted me an incorrect sign for my wedding!