You see it more because it's on the internet. In real life people keep a lot of thoughts to themselves.

Hate is getting more and more acceptable.

This is a very intentional goal, and conservatives have been pushing for it basically since Reagan. For a while, saying that you where a white supremacist was generally not acceptable socially, being too racist was considered bad.

Now, conservatives are proudly bigoted, and that gives cover to everyone else. Every time somebody makes a racist/sexist/homophobic/transphobic "joke" and gets no pushback, it makes it a little more acceptable to keep making those jokes.

Every time a conservative pundit or influencer goes on a racsist tirade, or homophobic one etc, it tells the people watching that its ok for them to be super bigoted.

And so they are.

Endgame capitalism is squeezing harder since the 2008 crash and then Covid. They predicted polarising of politics and ideologies. We're seeing tribalism as a reaction to fewer resources and harsher conditions, all of which are down to greed and oligarchy. They've succeeded in getting us to fight amongst ourselves instead of them.

It's the second half of your question. People have always been jerks online, but the older we get the more we seem to notice it.

When I was a kid and connecting to people online was slowly becoming more and more common i thought everyone was nice. Then i found out what "chatrooms" were and realized that's a whole different crowd of people... Then i found out about forums and how certain ones had very nice and helpful people, and some had very know-it-all-call-you-stupid kind of people.

Now as an adult i see assholes everywhere online but have learned that if someone says something that doesn't settle right with me it's probably bait, and not going to get better if i engage 🤷‍♂️