I see a value in this approach.
I don't known your experience, but as soon you have a well known OpenSource project with binary distribution, you are going to see it available in a lot of scam download sites.
In fact, the OpenSource licenses allow it, and the author is going to have a hard time taking them down. In this regard, OpenSource licenses are too permissive, and are doing a disservice in being too easily abused.
Imposing additional restrictions to binaries, seems a good approach to have legal arguments to prevent that in the first place.