This is a very good way to see things for sure. I'll admit, I've sometimes weighted the negatives over the positive every now and then, but it is always nice to also mention some of the good along with the bad. As long as it is justified and understanding of course. Can't be too unreasonable with some critiques, right?
But you have the right of it. We're only human. And it's easier to see the negatives than the good things for sure. Hell, I know I've got a few frustrating memories of critiques myself when someone criticized a character I was making. It's a part of it sometimes. What matters is what we do after said critique. Just like when a mistake happens. What matter is to not dwell over the mistake, and focus on what to do after.
I can't wait to see this project move on smoothly. I've only just started it recently and I'm loving the idea so far. Good luck on developing this VN!