100% a system D like issue. And I get it. People tend to hate change. The old init scripts work okay back in the day. And if you're familiar with them I can see why you wouldn't want it to change. But system D really has brought something to the game. It's so much easier to enable disable services. No having to dig through init scripts trying to find the one you're looking for which might be called through a script of a script of a script.
And while I hate to see fragmentation between the Linux and BSD space. Part of that is on the BSD space. Reluctance to do anything different than the way it was always done can and will hold you back. Not that BSD has ever been fragment free on its own.