I identify with a lot of what you say. As someone who is (as you say) "pro-equality-altruistic" but not "anti-tribal-free-speech-absolutist", one thing I want to say is that I don't hate you. I don't even dislike you. I feel like the media and social media are making it feel like we all hate each other for tiny differences in our worldviews. I've come to believe that those spaces are dominated by the most entrenched, vocal, spiteful people. If you care about equality and altruism in your heart, I'm with you. And I bet a lot more people are with you than you think.
Anger gives us a spike of dopamine. The people involved in this industry are selling you that dopamine hit. They aren't required to believe anything they say. A large percentage of the people in media were educated at the finest universities on the planet. I think it's silly to believe they're so foolish they can't see that what they are spewing right now is exactly counter to what they were spewing 5 seconds ago.
A lot of people want similar outcomes but disagree on how to get there. When you recognize that you and the other person want the same outcome but disagree on HOW to get there it's more annoying than it is anger inducing. I'm not "anti-tribal-free-speech-absolutist", but I get why people want it. By seeing their point of view I can at least say, I see your heart and I get that this is because you want more goodness in the world. Just a long winded way of saying. I agree with this too much online is pushing conflict or blind agreement, and not as much shades of agreement or small disagreements.