If you read Anti-Semite and Jew, one of Sartre’s main points about the rise of anti-semitism is the intentional adoption of a “nothing matters, lol” attitude of its adopters.
The entire point is to invite/allow otherwise “good” people to be able to think it’s not entirely serious, and that caring is pearl-clutching and is lame.
That way they can vote for their tax cuts, wear their “team” colors, and keep voting for “their” party.
It happens with successful sports teams all the time. Tiger Woods just got in his fourth (likely under the influence) car wreck, and sports media is already making excuses or talking about how hard he must have it. It’s the same process.