I imagine they would probably say the same thing to you.
You're really not willing to use an excellent piece of software because one time you saw a dev dismiss someone who didn't like the default color scheme? How is that not even more petty?
Frankly, that is a total misrepresentation to call that verbal abuse. What it is, is frustrated devs dealing with a rudely worded and pointless issue.
That issue is literally just trying to start a bikeshed about a color in a standard color scheme they chose as the default. It could not be more useless. On top of that, they try to start that bikeshed by simply saying "the colors are wrong" and pointing to a terrible screenshot.
Open source devs have to deal with a ton of unproductive garbage issues that they are not paid to deal with which risks engendering total burnout. It is way too much to ask them to treat every single person with kid gloves especially when they are opening issues from a place of disrespect.
You're really not willing to use an excellent piece of software because one time you saw a dev dismiss someone who didn't like the default color scheme? How is that not even more petty?