Releasing binaries is a lot more work. You can tell other people to do the work, sure, but this telling is unlikely to accomplish more than some doing.

Consider making a donation towards binaries, perhaps of build servers or Windows licenses so that this can be done. GNU projects are funded by the FSF, so a donation to the FSF along with a request for binaries carries a lot of weight.

Of course, the most weight is carried by a code contribution. Help GNUnet make those binaries!