At this point I don’t think it really matter who thinks which system is better. The technical aspects are irrelevant as long as they work in a manner that completes the tasks. I certainly find no difference in boot times between systems that were loaded up with older releases pre-systemD, and systems that were freshly installed with systemD as the only init. Oddly I DID find one hell of a difference on a raspberry pi when I installed raspbian with systemD and it took nearly a minute and a half to boot, then I converted it to sysV and it booted in 15 seconds. These days most of the boot times I pay attention to, however, are on bare-metal servers which are now taking five freaking minutes just to get up to grub, so the difference of a minute is OS boot time is now completely meaningless.