Of course people are tuning out. Please keep in mind I am saying the following as a mostly liberal slightly libertarian.
What has passed for liberal culture over the last decade has included an awful lot of outrage over every injustice but not an awful lot of solid action to correct those injustices. The Democratic party has tried to harness that with a lot of identity politics that avoid the real issues. And so the result is you have a ton of people who are always upset but things never get better.
So of course people burn out. Or they get cynical and decide nothing is going to change so it's not worth getting worked up over. You see a lot of that in this very thread.
To anyone angry at me, downvote me if you want, but if you want change actually fucking do something. Stop consuming short form content like Twitter and TikTok, start consuming long form things that make you think and expose you to different viewpoints. Lex Friedman interviews are a good place to start.
Understand that not everybody who disagrees with you is bad or evil or malicious.
Very few issues are simple. There is rarely an absolute obvious right and wrong. And if somebody adopts a viewpoint you think is wrong, consider that maybe they have reasons they think it's right and use those reasons to challenge your own beliefs. You may conclude that they are still wrong, but you must be open to the possibility that you might be wrong. If you aren't open to being wrong, why should they be?
And in the world where nobody can admit they are wrong, nothing productive happens. You just have two sides shouting at each other.
Then take a step back from your own personal outrage and think about what is actually important. If you had to choose between ensuring every American has good health care, and ensuring every American has their pronouns recognized, which do you think is more important? So which one are you focusing your advocacy and speech on?
The simple fact is, if you (and I am addressing everybody on all sides here) stop getting riled up over wedge issues and start focusing on the things that The majority of the country can agree on, you might find there's an awfully big agenda of problems we all agree should be fixed that aren't even being discussed.