You should be trustin erc20 if you are holding ethereum,because if you dont you shouldnt be holding ethereum in your portfolio.I wont be going to trust these scam projects,but it doesnt mean that we shouldnt be closing our hands to these tokens because few of these tokens are useful to our community,a lot of erc20 tokens are indeed created to scam people but not all of them.
Fraudulent projects are a lot, but this is not an indicator of the platform and its performance. You should trust the platform Ethereum and tokens ERC-20. Since this platform creates a massive number of projects that will be applicable in the real sector and will be in demand. Over time, I think many projects will be removed from the blockchain, and only significant tokens will remain!