This is a scary phenomenon, because many teams can create ERC20 tokens simply because it's easy, so they can create ERC20 tokens at will, just to make a profit.
I think these teams will eventually face legal sanctions.
They can create a lot of erc20 token but the token itself won't have any value and they can't get anything out of it. The only way to sell the token is to create airdrop and hope some dumb people will believe the promise and buy the token. It's open-source so we can't stop the creation of more token.