The key weasel words are “to defend themselves”. The Biden White House does not consider the Israelis going into Rafa to be defending themselves.
Yep. “[T]he vast, vast majority of everything that they need” for defense implies that they are not getting arguably offensive weapons — and, indeed, that they are not getting a minority of what they need for defense.
Exactly correct.
Biden’s idea of defense is in line with how we defended the Red Sea:
“Have We Lost The Red Sea?”
https://www.youtube.com/watch?v=Dhdg0itfxK0&t=11s