What makes this guy think it's acceptable to talk to people like this?
If you are telling people to use your hosted version of your open-source contribution yet have no care for responsible stewardship, you are being irresponsible at the expense of others.
If you don’t want emotional responses after purposefully breaking the hard work of many, you are being unreasonable. While we should strive to be respectful and courteous under such tension, I can understand that not everyone is successful every time.
In other words, I think empathy should go both ways here. Usually, I find that others act very unreasonably and rudely towards maintainers of open source contributions. In this case, I think both parties have made mistakes that deserve forgiving (but not ignoring), including the rude emotional reactions. Both parties should apologize to one another.
They may have been more reserved on the first go around but I can empathize with them seeing red now.
Being the nice guy you are, you bring the issue up to them and give them a very reasonable solution.
Not only do they ignore you, but they do it again.
Wtf is the point of google fonts if I can't rely on them to serve fonts? What is a "Font" anymore? The new "version" isn't Montserrat, it's Montserrat2, and it's been hotswapped with Montserrat.