Bit of context and spoilers - He was making a statement about social media threats/harassment
The first part - using social media - whoever people vote to be killed, gets killed. Trying to show these actions have consequences. The people voting feel immune to these consequences. They just voted, they didn't kill anybody.
He goes through 5 rounds of voting, with more votes every time. After each round, the most voted for is killed.
Up to this point he's exposing people trying to use social media to try and harm people Eventually he turns it around, and kills everyone who voted
The whole thing kicked off because his friend/romantic interest tried to commit suicide from cyber bullying. He's pushing that these actions have consequences, even if you hide behind a screen.
The killer himself is a psycho, so the morals aren't exactly impactful to him. As for anyone else questioning, the definitely do.
Disclaimer - been a while since I watched the episode. It's pretty good, definitely need some suspension of disbelief (but that's most episodes)
My playthrough of cyberpunk I found that they had these choices, but the effect was identical regardless of what you chose (except the very end of the base game, and the DLC) I enjoyed the game, but that was my biggest annoyance