It is never going to stop. Scam exists for centuries. No one can stop scams. If one gets taken down, a new one will pop. And the crypto space is decentralized, so it is almost impossible to stop them. What we can do is avoid them and point them out so that others can stay safe from them. Every time someone invests on those projects, they encourage the scammers to scam more.
how best can I get to know more viable projects like the ones I already have? When will the proliferation of shitcoins in crypto space stop? Who will check mate the proliferation of shitcoins?
Use the forum to know more about the projects. If you see there isn't any discussion or active community for those projects, best to avoid them. No one can "check mate" the proliferation of shitcoins.