Isn't supporting new features one of the many issues? Each API level has many very useful new features but most users are stuck several versions below. There's

Isn't supporting new features one of the many issues? Each API level has many very useful new features but most users are stuck several versions below. There's also the security issues of having an older version of Android. Each new version patches many security vulnerabilities, but most devices will be forever stuck on an old version. From what I've read it seems to be mostly a hardware reason that it's up to the manufacturers to keep Android up to date.