Of course. Although it has been claimed the moored boats are a problem even when not moving.
A certain subset of the (mostly) new to the area middle classes don't like the boaters full stop. Think they're scruffy, spoiling the view, the wrong sort of person, etc. Which I think is what it's really about.
According to several people I spoke to today, suspicions are that the Canal and River Trust (CRT) want to sell more land on the river side in Hackney to property developers.
To build yet more, unaffordable to most people, flats.
So, although the CRT are claiming it's about safety, and although it's true the rowing club is on-side, it's not necessarily all as simple as rowers v boat dwellers...