All you can do is be aware of your own biases and foibles and self-censor. I’ve been giving feedback for most of my life on games and game machines and computers … it actually takes experience and maturity to recognize your own faults and to be aware of them while giving feedback. It also takes practice to give constant good quality feedback.
Sometimes, after presenting a position or a particular type of feedback that is shaded with your bias, it helps to take a step back and review what you wrote … sometimes put off hitting the submit button and after some elapsed time occurs, review what you wrote with a critical eye.
It is heady working with developers and writers and programmers who (to you) are creative, and perhaps people you admire. I know that I met so many people that inspire me. Sometimes they enjoy the conversation too.
The thing is, if you really are motivated by seeing your ideas and such in the game, then perhaps it is better to become an author or developer yourself. I guess I’ve been on both sides of this (getting a rush from seeing your feedback implemented vs being ignored, even when you are right and the developer is totally wrong) for so long that the rush I get is tempered.
The hardest thing for me is to recognize when to move on if I really care for a game. With Elder Scrolls Online, I helped alpha test the PvP in that game and one the obvious flaws that me and my testing team saw was that the rewards for being top PvPer were permanent and too powerful - even after relinquishing the title. We put in that feedback (there were hundreds of us) but the developer didn’t listen. This was the case for much of the feedback provided.
The younger me would have been putting in feedback over and over and over trying to convince them that this would lead to people cheating the PvP system to gain dominance and that this dominance would be permanent, driving away more and more people. I was on board with this title since the developers first started talking about it because I love the Elder Scrolls world as it has been developed in the single player games.
Now, I say what I need to say and then move on. Most people I work with get to know me and learn to value my feedback for what it is, agree or disagree. I’ve met some authors here who I admire and who I respect very much. I think they recognize the value of my feedback. So, yes, an author can ignore my feedback or take it - and they are under no obligation to use it. Feedback isn’t meant to be the way to get a rush in seeing your ideas implemented. If this is your main purpose in giving feedback, this is the real issue.