BK here is cheaper and wayyyyyy better than McD. So weird when people say "at least McD is consistent" - that doesn't help if "consistent" is inedible garbage.
That's not a crazy idea. Go ask your sis. Catss unlike dogs, have blood vessels and nerves in their nails so you can only safely trim them a few mm. A scratching post or something similar gets the job done in a safe way without trimming.
They couldn't loop around really. And you can only trim the very end of a cat's nail without injuring it. If it's purely a indoor cat just give it a few ways to scratch their nails and everything is fine without ever needing to trim the nails.
Usually it's pretty safe except when there are calves on the field. It happens every year that some tourists (especially with dogs) go through a field with calves and their mothers and someone gets injured.
I mean, you are buying analogue products, so what do you know anyway.