I get that systemd isn't the kernel, but it's close enough. There are many who would agree that breaking existing behavior in the name of security isn't wise. I have also not yet seen anyone point out specific security issues this solved. Unix has worked this way for a long time.
User launches voice chat, logs out, application stays around and listens on user/other users. Just one example. Having programs running despite being logged out is unintuitive and wrong. Most users do not know or care about going into a task manager. And if you want Linux to ever have a chance to succeed on desktop, they shouldn’t have to.
As to the Linus’ post, if you want to argue that there wasn’t enough notice about this change, then that’s fine, but this isn’t what anyone here is arguing.
Also it’s a configuration switch, any distribution could have decided to revert it or postpone it at their choosing.
Apparently you think Linus is one of those who "lack perspective"?
http://lkml.iu.edu/hypermail/linux/kernel/1711.2/01701.html
I get that systemd isn't the kernel, but it's close enough. There are many who would agree that breaking existing behavior in the name of security isn't wise. I have also not yet seen anyone point out specific security issues this solved. Unix has worked this way for a long time.