So the developer already suffering from publisher's bad decision is a tolerable collateral casualty in your "war" for justice. Noted.

Not that the kind of people leaving Steam reviews struck me for rational, but this is on another level.

The developer was actively encouraging their players to ask for refunds and leave negative reviews

Their community managers started off on the wrong foot with how they reacted, but issued strong apologies and quickly changed track. The CEO himself was tweeting about his own culpability in the mess and encouraging unhappy people to make their voices heard in reviews

So... Yes

That's a risk developers take by signing with a publisher.

Arrowhead's CEO was on Twitter explicitly telling people to refund and leave negative reviews, as that customer feedback gives them more leverage to negotiate with when discussing reverting the unpopular change. But nice "what about the children".

The developer a casualty, but not in the way you're trying to portray. They were a casualty of Sony's descision to cut the game off from over half of the countries in the world. In addition, the Helldiver's team and CEO told everyone to let Sony know what we thought with our words and our pockets, so we did -- and it worked. I'd suggest looking into these things more before spouting nonsense.

To us, you come off as irrational trying to defend Sony while using the developers as your (unwilling) ammo.