I hear lots of people complaining about this. That it's some sort of theft. Yet, I've rarely seen people actually use the OSS license and decide to take it their own direction.
I think this really ends up reaffirming what Sentry is saying in the first place. It's hard to build a OSS project and you get too many freeloaders.
You're basically a freeloader and now you're upset that there's no longer a free ride.
BTW. Not trying to be insulting by using this term 'freeloader'. I wasn't trying to be derisive just saying you were getting value for free.