I understand that scammers will not leave and there is a bit of a trouble in that, but if we are more careful than this could grow bigger. Sure there will be plenty of projects whose aim is only to take your money and nothing else, but there will also be projects (and there are some already) which aims at changing some stuff.
If nobody ever did DEX projects, we wouldn't have them, if nobody tried to do NFT, then we wouldn't have them. Some people aim at changing some stuff and bringing a better new thing to the crypto world, we should be focusing on how we could do a better job with them. I am not saying that it would be easy to change the crypto world, but if never fund any project, then we would not grow at all.
It is true that not everyone out there trying to create something new is a scammer, but a great deal of them are, and this makes people very suspicious about any new projects, because regardless of how legitimate they may look people will always wonder if this is just a very well disguised scam.
And while it is depressing that things got to this point, we cannot really blame investors to think this way, as more than anything they want to earn profits and to protect their capital, and most of those projects do not offer the possibility to do either.