They are not doing ICO using the ERC20 tokens today which is good.
We can't stop them from creating tokens nor coins, its making these coins/tokens valuable in the market that makes it difficult. To be able to do that these days it needs uniqueness and use case of the coin which merely any new coins today aren't unique.
There are analysis that still there's a lot of crypto project out there that will create ERC20 tokens, but of course that doesn't mean they are all scam, for sure there were some legit out there, we just need to observe, make a thorough research regarding it if we found some interesting project.