There was nothing to be gained in this except ill will. Hanlon's Razor suggests they were in a hurry to fix a security issue and didn't dot their i's on checking for dual boot systems.
They have never, ever supported anything other than the Microsoft bootloader[s], and if you work around that for instance it's pretty trivial to blow up your data by hibernating Windows and booting into a different partition. Resuming hibernation loads the old MFT onto the modified partition and you pretty much lose everything.
Definitely to be avoided, along with a few other considerations.
But experienced multibooters can usually reboot so quick that they have not had any need for hibernation since forever. It's almost like a valid excuse to not fully reboot a sluggish machine, more so than an energy-saving success. But I don't blame them.