Ian Jackson's general resolution to prevent init system coupling has failed to pass, the majority vote deciding that the resolution is unnecessary. This means that not only will Debian's default init be systemd, but packages will not be required to support other init systems. Presumably, this means that using other init systems on Debian (without using systemd as a base) will not be possible without major workarounds, or possibly at all. It also leaves the future of Debian projects such as kFreeBSD unclear, as systemd is linux specific.
The vote results can be found here
The winners are:
Option 4 "General Resolution is not required"
Now, this sidesteps the long term "creeping tentacles" issue, and correct me if I'm wrong, but as of right now, and as of Debian 8, how does the present situation mandate that in order to avoid systemd, anybody HAS to jump ship NOW? Yes, systemd avoiders will have to develop the exact procedure to keep systemd out, and yes, that may become more and more difficult with time as systemd-itis spreads its tentacles into linux. Everybody has to make their own decision what to do and when to do it long term. But why right now?
If you know the captain of the boat you're on just suddenly decided to change course and will end up eventually arriving at a destination you have no interest in going to, it's a hell of a lot easier to jump ship when it's still at the dock, or just about to leave the harbor. You describe in this paragraph the very reason for leaving Debian right now.
The biggest problem with systemd is that it continues to be a giant, two-handed up-yours to what were some of the most zealous and talented Linux advocates and developers. Whether or not it is technically superior to anything no longer matters. It must be abandoned, or those who dislike it will simply keep abandoning Linux wholesale. Seems the latter is what will be the primary outcome of this upheaval.