For the 24 hours after the incident occurred, it was being reported across the world as an Israeli strike on a hospital. This precipitated huge protests across the Arab world and beyond, which could have pressured the governments of these countries to intervene in the conflict in some way. I don’t think it’s right to say that the incentive to potentially fake a recording would not be there.
I do not claim that the Arab journalists were correct in their assessment that the audio recording might be fake, just that they should not be instantly dismissed, as was happening in this thread, including on the grounds that the IDF were not capable of incompetence in attempting a cover-up, which is proveably false.