See, for me it is exactly the other way around. I happen to value the 'I know this, so the other thing is bad' even less. But that's perhaps why anecdotes are not very valuable.
I objectively know that systemd now maintains components that were previosly unmaintained, I also have data on it booting faster.
I'd also say that Slackware is an EXTREMELY conservative distro, they had/still have? kde 4 in the repos, so I'd expect the userbase to be of a similar mindset.