Toothpaste spit all over the bathroom faucet, the walls...on the DAILY...who else has to contend with this??

While annoying, take a breath and try not to let it get under your skin too much.

I guess this is a common bathroom that you have to use too? Ick. If so, I guess you will just have to give it a quick wipe before you use it.

Is this a new behavior? Are there other new sloppy behaviors happening?

To answer your question, anyone that has raised children has dealt with toothpaste all over places it shouldn't be. And since it's said that we revert to being childlike as we get old, it shouldn't surprise you that it's now happening in your home. Why are you letting these little annoyances bother you so? I recall your question the other day about your mom putting her face mask on her bed instead of in the trash by the door. If all of these little things are really bothering you so, perhaps it's time to be looking for the appropriate facility to place mom in, so they instead of you can deal with these little annoyances. Not everyone is cut out to be a caregiver, and that's ok. We all have our limitations. You might need to rethink yours.