Best wishes to Devuan
It's a pity that they weren't able to release in 2015, when it was possible mostly to remove systemd from Debian itself, but it seems they must have been gearing up to understand the way systemd has become a dependency even when you don't use it as an init, exactly the issue Devuan warned about.
I mostly use systemd on Debian servers now, but that's because it's becoming harder not to. It's possible on a server, but you just start hitting little irritants. That demonstrates that systemd is far more than the init it claimed to be replacing. I once swapped MTAs from sendmail to postfix at a company with about 400 users. This was done in the middle of the working day, with no loss of service. That's what the unix way of building blocks for services allows, but choosing to run an alternative init is now what systemd expressly prevents in many use cases. Such a pity that Debian, for one, didn't remain neutral in this.
I'd love Devuan to gain credibility and become a plausible alternative.