No it wasn't. It was bad.
Granted, the original bug report could have been a bit clearer, but the reporter was more than happy to help out and promptly responded to the questions and even some checking of the RGB of the colour in question, and then offered to open up a new related issue. But the dev in this case took the worse interpretation of the reporter's intent and claimed they were rude, or disrespectful or whatever, and took their report as an attack on their choice of default palette. I can imagine that the reporter was surprised and puzzled to be called "entitled" here.
Sounds a little bit entitled to me..
And FWIW, that website they're all referencing absolutely will not say a color contains mostly "yellow" (it reports the highest RGB value), no matter what you do [1].
I went and looked at the issue, and the title is not "colors are wrong" but it is "Colors don't look as they should". Interesting how everyone comes away with what they this was said. Says a lot about the dev who responded, really.
This says a lot about me, but I empathize with that. That the reason I strive to be perfect in everything is that I feel like I'm under attack. Illogically, because I was, as a child, continually insulted.
It's a shitty way of living, trust me. But I get it.
https://github.com/alacritty/alacritty#installation
Labeling a piece of software as "cross platform" without testing on all platforms comes across as dishonest.
It's totally fine to have a policy of not supporting OSX, as long as you communicate it with professionalism or at least civility.
And please note that Mac OS is NOTORIOUS for having bad/buggy/outdated support for OpenGL (which alacritty extensively uses), and this is a legitimate frustration that many developers in the low-level graphics domain have. It’s already really maddening for the devs, the contributors shouldn’t nag too much about it (I understand people outside the domain might genuinely not know this - but it’s always good to read some of the previous Github issues before filing your own, to learn the general “vive” among the core contributors)