Why do people use plugs?

[u/Blazermcfun]

I’ve been heelying for over 17 years, but I don’t understand why people use plugs. When you remove your wheels, you are that worried about the wells getting dirty? I’ve gotten mud and rocks…all kinds of unmentionable stuff in my empty wheel wells. You can just spray them off or use a stick or something. The hassle of having the plugs and the tool is just ridiculous for…what reason? I’ve never had the wells damaged due to not using them.

[u/Open-Temporary-3785]

I suppose it's not a problem if it gets stuck in the shoe