That’s not acting god, that’s just playing by the rules. If you spent time learning, you would understand the importance of their ask. It’s really not hard to translate a normal set of words into a pull request and it’ll get more dev eyes while avoiding people who don’t care about coding. There’s more reasons, but I think you can understand this as a reasonable ask now.

Not sure if this is what you mean but I personally ignore anyone who complains that my work they aren't paying for isn't good enough for some reason while also not making any effort to contribute to a solution.

There are many ways to help even if you're not a developer, logging a problem on the project issue tracker, a hefty zap, a well thought out note, even pen and paper drawings of UX improvements.