Funny, I was going to post this same thing...I'm not sure it would have been the way to go, but it should at least have been a consideration and I'm confident that the thought never crossed McDermott's baffled mind.
I wonder if the Bills even have a batch of two-point plays ready for such situations. League-wide, I think two-point plays have just under a 50% success rate, but with Josh Allen, you would think the Bills' chances would be significantly higher.