Martee
Have to diverge from the OP's thread for just a moment.
" .....it can easily damage the cup no matter how hard you try to be careful." It can also damage your putter.
Many yrs ago I picked up a used-but-perfect YES! Callie putter, not a mark on it. A "friend" asked if he could try it, so ...
I handed it to him. He usually digs the ball out of the cup with the putter head but I thought he'd never do that with my new-to-me 100% perfect putter. I didn't even think it was necessary to say don't do it.
He did.
And scratched the top of the head so the scratch cannot be ignored. I bitched. I was fuming. He said it's going to get marked up sooner or later so so what. If someone in our foursome leaves a wedge next to the green or needs their cart pushed along the fairway as they navigate a shot from the rough, I'll do that for anyone but I won't do it for him.
Fuck 'em.'