The creators of these blockchain networks have used great knowledge to create these technologies and so far they work perfectly, so why not make an effort to improve them so that they can limit only one name for new tokens to avoid fraud? I think if they can do that it will also help add value to the new project because scammers will no longer have the opportunity to create a fake token using the details of the new one.
What are your thoughts on this?
I don't think that's possible, in crypto world there is no limit for people to create a token, it can't be done as you mentioned, the best way to avoid this is to learn to know the real token, there is no blockchain upgrade to avoid scam tokens .
Moreover, limiting only one token, this actually does not provide the best chance of crypto stability, that's why we need knowledge if we intend to enter the crypto world, and it is not wise if blockchain only allows one token that lives in crypto itself.