To be fair to reddit, it really depends on the sub. If you go on /r/fightporn or /r/crazyfuckingvideos you're going to get a certain demographic that tends to be reactionary.
Then if you go on /r/politics or /r/socialism or /r/conservative you're gonna get clickbaity echo chambers
But there are subs with great discussion on niche topics. /r/zizek or /r/credibledefense or /r/askhistorians all have very little outrage and instead good discussions and analysis.
The problem is not unique to reddit. It's a side effect of a large enough community. The focus gets broad and the issue is that posts like Twitter screenshots or memes are easier to digest. Because they are easier to digest, more people click on them and upvote. Therefore these posts will almost always reach the top before articles or other long for articles.
This over time gives incentive for posts that can a) draw the most attention with a headline and b) is fast and easy to digest
Outrage porn is exactly that. You see an image "DeSantis passed a bill to out toxic chemicals in roads!"
People don't bother to do research on what the law says m and they immediately go to the comments and make jokes or berate the GOP/DeSantis
Nuanced discussion gets pushed to the bottom and once again people will downvote whatever they feel is against the narrative constructed by the OP.
Tldr: no reddit isn't getting worse in this regard. It's a function of large online communities. This website will likely see the same effect should certain communities get large enough.