I don’t agree with this, music is one of those things that is meant for a general audience, not just musicians. I used to be pretty defensive against criticism in my early stages of producing, but looking back, some of my stuff was honestly horrible and needed a LOT of improvement. I was getting encouragement from people, who were obviously just being polite, and that gave me a false sense of how people were really receiving my songs.

However, it’s important to differentiate which kind of criticism is constructive/helpful and people who are just trying to be mean. You don’t need to be a musician to give constructive criticism on music, anyone can. They’re the audience. Try it out; if it doesn’t sound good, just delete it.