Imagine you buy a licence for Microsoft Office, you make a word document, share it with friends/colleagues and you are charged a penny for every single time someone downloads that document on their device.
So basically unity wants money even for games made on their engine before this shitty update. All older versions of games with older versions of unity are eligible to be monetized. Forget ethical, how is that even legal?
Unity, I hope you die. Sorry to all the Devs who put their soul into developing it.
Ben?