But for the love of God, say it better than this. The "users only have themselves to blame because they got hoodwinked by a pack of liars and thieves who are very good at being liars and thieves" angle kills any chance of anyone listening to the actual point you're making because you went and wrapped it up in a giant dose of victim blaming.

I really don't agree. His phrasing was harsh and unsympathetic, but the world owes nothing to anyone and those developers should have done their due diligence. Trying to cast this in highly broad black-and-white morality isn't productive. Is it moral what Unity is doing? No. Is it Unity's right to do this? Legally maybe, but in every other sense, no. Are the developers who decided to use Unity a bunch of wishful thinkers who chose to ignore red flags? Yes. Unity may be thieves, but it's been clear for a while now that their business model was unsustainable. Everyone who chose to do business with them anyway chose to ignore the warning signs. People are responsible for their own actions, and while they aren't responsible for being cheated, they are still responsible for ignoring massive red flags with "we're not a legit business" on them in bright white letters. I, too, blame developers for their share of their predicament, for the same reason that I blame would-be mountain men who starve to death and then get eaten by wolves because they tried to tame a national park with a pocketknife and a Walmart tent.

As for the other people who got really upset, I think choosing to allow yourself to be upset by style to the extent of ignoring the substance is exactly that: an active choice, one you have to consciously make. If you explained to someone why continuing to burn coal for electricity is bad and then finished it with something harsh like "only a total dumbshit would disagree with this", would that person be justified in saying "What an asshole. Clearly fossil fuels can't be that bad"? Of course not. If a person did that, they would be in the position of taking in the argument, understanding it, and then actively choosing to disregard it because it conflicts with their feelings. That's the kind of magical thinking conservatives stoop to when they dispute climate change, the efficacy of vaccines, etc. because they're butthurt about people saying "of course the world isn't flat you fucking idiot". I would hope that people who have a greater degree of emotional maturity than them (i.e. any) would be able to look at a person's argument from a calmer and more objective point of view. It's not like that's even hard.

To be clear, you're not being unreasonable, but the other people responding to this guy are having proper hissy fits and they really need to get a grip.