I can certainly appreciate the point, but realistically what can he actually do? Israel have already shown that they don’t actually give a toss about what the US of A thinks.
Israel is literally existentially dependent on the US along multiple vectors including material military aid and diplomatic cover (especially now that they have made themselves a pariah state globally), this means that Biden has holds ALL of the leverage. Biden just has to actually demonstrate to Netanyahu he isn’t playing around, which Biden has being doing the opposite of.