From what I've seen, Poettering has been highly opinionated but polite and level headed when discussing systemd. Even in the face of angry maniacs blaming him for every problem in the world and calling for his demise on mailing lists, he's remained factual and solution oriented. That is a far cry from the «I will break all your audios» raving lunatic person that I feel he was sometimes channelling in the context of pulse.
Switching a major OS component like init will always be a huge PITA for system admins, but in this case, at least the end result should be something that gives them more control and fewer head aches once the migration is complete. But yeah, holding off the migration for another year or two is prudent, systemd is still in the «rapidly gaining features» phase, which historically implies lots of minor incompatibilities on upgrade.