Ah yes, now when we can't debunk the scan anymore, let argue "but plot didn't make sense" to handwaving a scan away without the need to
1. You need to know that there are always things that was introduced later on in the series, and that Room didn't contradict anything, it was used for Time Travel and then later we have rule that forbidden from time travel in DBS.
2. The rule doesn't contradict anything, because it is a room with all of time in it, if anything, rule is for person not for room, no one created said room, it is a part of cosmology structure, so Whis or Beerus are aware of it mean nothing, they can't do anything, cause it is a part of nature, part of cosmology
3. The rule is shit anyway, cause nothing happen to the other universe that developed time machine way before Bulma did, and then Beerus and Whis just casually shit on time without consequense, such as Whis time travel to the future and ask future Beerus to take care of Zamasu/Black, or Whis constantly rewind time that could impact history
4. Assume that they should aware of the Room and destroy it, it do more damage actually, it is a room contain all of past, present and future in it, blow it up mean you shit on your own history, blow everything up, cause even bigger consequense since they just destroyed all of past, present and future of the world they are living in
So wrap up, your argument that, but plot it didn't make sense is moot