@Anomie pointed out a bunch of seemingly-valid issues w/ the service wiring of the parsoid extension in comments on https://gerrit.wikimedia.org/r/518682 PS6 ... but @Tgr had timed-out on his tour-of-duty in Parsoid land, and it's not clear that any of the core Parsoidistas really understands service wiring well enough to address @Anomie's comments.
The patch got merged in order to get initial tests running. But we should clean up the service wiring at some point.