What I'm disagreeing with in your statement is the conflation of "real knowledge" with "power." It is true that all the most powerful governments in the West have taken roughly the same line on the charge of genocide in Gaza, but it is not at all the case that everyone with "real knowledge" has agreed with them.
Correct. You shouldn't decide whether there's a genocide going on in Gaza by consulting official statements from interested governments. You should decide based on independent human rights researchers, international law scholars, journalists, and so on. Opinion on the subject among these people is very much split.