I don't think devs that work for corporations really care about this change, if their group used Unity for some reason, they will just move on to their next job (and they're the ones who are worst paid). Every indie dev or otherwise small dev company that has used Unity ever in it's last ten years are now open to serious bad actors. A single person running a script can cost a dev hundreds of thousands of dollars on their own, whether a troll, just same guy pissed off for some reason or another, or even a competing dev. Hell, the one idiot living in his mother's basement who sent death threats to Unity could also do it.

There is no "relatively little interruption", as not only have people lost a lot of work on something they already paid for, they also have to remove all previous work they've made or published with the engine. It's all susceptible to attack.

I agree it's not on the same level as pharma scum, but saying "it's just a video games" is much too far off the other end of the spectrum. At least Shkreli never managed to bankrupt people who had purchased anything (from him) in the past, or made them 'regurgitate' any benefits they had seen. Though I'm sure he'd have loved to.