The entire point of feedback is to see it as impersonal and not a value judgement on you (the creator) vrs the project.
Like okay, what if someone was extremely successful and taken a lot of risks and repeats the same feedback you've gotten. Would that make the feedback magically true?
Instead of judging the people who give you feedback, judge the feedback itself and let it go. In the end, you disagreed with them because you knew what was right to do. There is no point thinking about them as good or bad people but just whose feedback was objectively wrong.
Again this is a bit of a ramble but my point is that "i will prove them stupid people wrong" can turn into internal resentment as well where you judge your victory by how much you "showed them" rather than how much you showed yourself. It is very likely you can get all the success in the world and those people will still think you are a loser. You cannot win that battle and if you actually believe them thinking that of you matters, you will not be happy even in success.