It’s not a conspiracy theory if Trump and all parties involved explicitly state this was for Israel. The simplest explanation is that they are telling the truth, which makes sense since the US had nothing to gain from this.

Netanyahu has wanted to do this for decades. If you rob a bank, you don't get to say "oh, well, my crazy friend down the pub has been saying we should rob a bank for ages, and I suddenly decided he was right"; you do have some personal responsibility.