They picked Simpson because they’re still planning to be good and wouldn’t have been picking that high again in the next year or two unless things go really wrong, so it made sense to use the luxury of a pick they got in a trade to take a QB of the future. And because the GM is friends with the dad and made a promise.

But it’s very unlikely that they could have known for sure that this Myles Garrett deal would get done at the time of the draft, so I think the cause and effect is being flipped here. I doubt they drafted Simpson because they knew they were about to trade away next year’s 1st, but they might have decided they were more comfortable trading that pick after drafting Simpson.