I said there are no buts to this, yet here you are with a but that just further proves you do not understand the situation.
- "Kill your darlings" is good advice, but to a limited extent and not the way you're using it.
- "Outside influence" can indeed be a helpful way to improve a project, but it is a delicate and PLANNED concept, and you are obviously just trying to stroke your own ego here with subjective and shallow feedback.
- You were never "polite," you were being self-righteous. You were not "harsh" either, you were being narcissistic. I already explained why your "approach" does not come off the way you apparently think it does, and now you're outright insulting the developer, too.
- Finally, to reiterate: You obviously do not understand game development, you obviously have not worked in game development. You are a consumer who has played games before and thinks this is enough qualification to know better than the devs. It is not.
You are not in the position you see yourself in.
Take this with you for the future. Do not pester game developers any more.