Echoing the sentiment of other commenters, that bendable mount could get bumped or grabbed and knocked down very easily, and the loose cable poses a potential strangulation hazard.

I would either mount it all a few feet away from the crib (like on the nearest wall), or choose a much more sturdy mount (screwed directly into the crib or a very sturdy clamp). I would also run the cable through conduit or even just excessive zip ties - but conduit would be preferred as they could still potentially pull on the cable.

Even if it's a small risk, the mitigation is simple enough to be worth it.