Answers vary with whether someone is a Trump supporter or not, but again, these are city states, not Iran, not even "almost Israel ally at this point" Saudi Arabia. He also has made no progress with the Palestinians, and has gone plenty backwards on the front (forcing Serbia to move their embassy in Israel to Jerusalem, huh?).
All valid points, but at least the perspective I've heard is it's breaking up the "pro-Palestinian block" somewhat, so definitely changing the power dynamics, and impacting the Palestinian situation as they are losing potential allies. And as for Iran, it's pulling countries away from their sphere of influence.
Who knows whether it will be a positive push in the right direction, but it's certainly changing the dynamics of the region.