Who else has more merit to make this decision than the Debian developers (= the important people) themselves? Random neckbeards whining on online forums?
Let me offer you an anecdote from my company. Now, we're a RHEL shop and not a Debian shop, but we've been around since long before systemd.
Most of our hosts now run RHEL 7, but we still have a handful of old boxen still running RHEL 6, and I've been personally involved with quite a few migrations from RHEL 6 to 7 during my time here. Whenever we retire a RHEL 6 host and replace it when a RHEL 7 host, the general consensus from the people who administrate it is "thank god we can now use systemd instead of having to deal with sysvinit". Every time I have to do anything on one of our remaining RHEL 6 hosts, I brace myself for pain, because our RHEL 7 hosts are just that much easier to manage.