If I contributed to the project, I did so under the premise of the LICENSE that was active when I contributed. If I didn't like OSS, I wouldn't have contributed to a OSS project. Them changing the license is a middle-finger to me as a contributor.
> Its fine to spend your nights and weekends on passions projects when your young [...] Its called being an adult
With all due respect, fuck you. Equaling "open source" to "young people can waste their time" and "software needs to earn money" to being an adult is a really shitty opinion to put out there.
Me (40+ years old) and many others do open source because we want the world to be about more than just money. Just because you cannot understand that nor want the same thing, doesn't mean that we're wrong and you're right.