Got an article on how Lightning fixes this?

This article is alarming to me as a normie user. I'm curious about going off the big exchanges and using my coins. What if I receive crypto through OpenSea that Coinbase deems soiled?

Although I don't like it, I could see private verification service popping up for P2P. "We make sure the coins are good before the transaction goes through".

Makes me wonder how much of a "walled garden" Bitcoin is. Sure, hold it on exchanges all you want, but don't try to use it or we lock your account.