Uncle, you start by reducing the issue to absurdity.
what if someone were to go on a site like reddit or resetera and read something that makes them feel sad or angry?
Well, what if this does happen? People feel sad and angry all the time about a bunch of different things. Then you both-sides the issue based on hypotheticals that are not happening.
what if someone were to go on a site like reddit or resetera and read something that makes them feel sad or angry? like if they heard about how russia is attacking ukraine and their despair led them to decide to attack russian people in the streets? or negative news about climate change could make someone develop crazy ideas about harming their neighbors for using gas-guzzling vehicles? can't we hold these sites responsible for allowing the propagation of such violence-inducing information?
Presumably, you think people who are against rightwing violence are OK with perceived or made-up leftwing violence like attacking Russians or people with large cars. And that because of this presumption we have to allow both situations to be fair, because if it did happen, that would necessitate a ban on all things since, by assertion, any random thing could set someone off to attack a Russian.
ideally there would be a near universal ban on content that could make anyone feel negative toward anyone else, because people are unpredictable, and their tendencies toward violence find their inception in such threads
Therefore the outcome is 1) there would be a near-universal ban on all speech and 2) we can't hold companies for individual actions. Which would be bad, therefor any moderation is unacceptable.
The problem with this is that not any old thing sets people off enough to murder someone. It's not happening with both sides, and if it did, it would not change the argument. While people individually are unpredictable, as groups they are not, and certain groups are the ones contributing to actual violence. This is the whole idea of stochastic terrorism. There is a large gap between the nebulous 'holding a site responsible' and advocating for moderation, especially when most are advocating for self-moderation. Also by saying the news needs to stop drawing attention, you are advocating for self-moderation and it's no different than reddit banning a sub.