Maybe, but it's not obvious. There are plenty of novel vulnerabilities in interfaces like io_uring and so forth. It's not that those features are bad, I'm just saying that there are tradeoffs to always getting the new stuff.
Maybe the compromise solution is to use newer kernels but keep certain features turned off until they "bake" properly.
This is probably a lot better than expecting it to be possible to maintain a secure release with a level of compatibility guarantee for 10+ years.