Yeah, at this point in the US' extremely long-winded debacle in the Middle East, you can't really blame Trump for it going haywire at this point. Sure, he takes a significant amount of blame, but it pales against Obama. That being said, if Trump makes it through a whole term without dying, then yeah he'll have a hell of a lot of blood on his hands.
The Middle East has been made into a fucking disaster by the US, as well as Israel (under US sponsorship). Saudi Arabia, the exporter of Wahabbism, is a devout US ally. Israel toppled Egypt in 1967, due to Egypt being poised to spread stability, and promote secular nationalism, to other Arab countries. The US increased aid to Israel by 20x (16 billion) in the decade following, and by 35x (28 billion) the decade after that.
The US put Saddam Hussein in power, then deposed him when he invaded Kuwait (where the US oilfields are). When he was sexually enslaving the Kurdish population, he was on par with Israel in terms of amicability with the US; only two nations in the post-WWII era have not been promptly attacked when they killed US soldiers, Israel and Saddam's Iraq.
Or what about Gaddafi? He ping ponged between being the West's favoured puppet, and the new Arab Hitler of the year. The former was when he allowed western corporations to plunder Libya's resources, and the latter when he kicked them out. He relented and let the corporations back in, and now he was a reformed paragon of western virtues.
The US decided to destroy him, as he was advocating for fellow North African nations to adopt the dinar, a gold backed currency, over their current dollar-backed currencies. Arab nations are not allowed to be nationalist, as that would be disastrous for corporations and the MIC.
And there's a whole bunch of other shit. All the post-WWII Presidents have been doing evil across the world, and to pin the Middle East on Trump is far too short sighted.