And look at the 2 teams that passed on Ryan for "safer" linemen. The Dolphins are 44-50 since, and their #1 pick Jake Long now plays in St. Louis. The Rams took Chris Long and have a 26-64 record since 2008. Both of the Longs are good to very good players. But, they're not QBs and those teams needed QBs. Both teams have since drafted QBs in the 1st round.
You can't say that either the Dolphins or the Rams made a bust pick. Both were very solid contributors. But not the difference maker that a QB can be. LTs and DEs have very important roles. Protecting and attacking the QB. But, they're not the QB. That's why you have to find one if you need one.
Now if the Texans look at all of the scoutng reports and come to the conclusion there is not a QB in the draft that can help them win, fine. Take the best player they can find. But, they're probably wrong. Because there is usually at least one franchise QB in any draft.
Good point. Matt Ryan has his faults - his biggest is his record in the playoffs. But he is a very solid player and one that should be able to help you win. Peyton couldn`t win in the biggest games of the playoffs for much of his career and still "only" one ring. I bet both these teams would trade their picks that year plus the QB they have taken since for Matt Ryan. They tried to do the smart thing and it backfired.
Of course it always comes down to "do I believe in that player" - if the answer is yes, you should take him. Even if you believe other players are more worthy of the number 1 pick. Trade down if you are confident you can still get them later. But don`t assume, you should be getting a more talented guy that skill is worth the number 1 pick. If there is a QB you like, you take him. If you are wrong, your team will suck and you will get to try again pretty soon. If you hit, you can turn your franchise around.