The upcoming weekly, 2.357, supports Java 11 onwards only, however, launching Jenkins with Java 8 still attempts to boot up until you hit the UnsupportedClassVersionError for various core classes.

If extra-executables detects an unsupported Java version and notifies the user about it, the process should be exited at this point, there's no need to attempt a further boot process at this state, it fails nevertheless, as intended.