"Jerk" is a pretty mild word to express dissatisfaction.

I would maybe ascribe it to a mismatch in expected decorum, hardly call it toxic. Like, do you expect a church or an informal conversation among peers? Or if you will, a cathedral or a bazaar? :)

And it was just one comment .. "We're all adults" goes both ways, let's not fall all over ourselves because of a little mildly bad word. Personally I don't think that's very constructive either, in the sense that it lights the fire under something that distracts very much from the actual topic.

They called it an astounding level of toxicity. Whatever your thoughts on the expected level of decorum, that seems a tad hyperbolic to call out over usage of the word "jerk". Such hyperbole is definitely not helping, and in my personal opinion, actually more "subtractive" than generically calling a group of people that did something you don't like "jerks". For one thing, it's not astonishing. It just isn't.

Exactly, we are all adults, this kind of non-answer-marketing-speak: "we've made this change to make sure we can improve the Docker for Mac and Windows experience for users moving forward" is dishonest. I, as an adult, would definitely call someone who gives me this sideway kind of answer a jerk.