People absolutely care about DC in general. Batman is still the literal worlds most popular superhero. Superman as a property is more iconic than anyone in the MCU across the entire world. People absolutely have an appetite for DC movies, WB just hasn’t put out the right content as far as a cinematic universe goes. The Batman was also a huge hit and that was very recent.

I assume you’re talking about malignant which didn’t perform well but has already become a cult classic… many notable horror enthusiasts cited that as their favorite movie of the year when it was released and it’s had an amazing streaming and rental run.