Well, that may be true...but there are other reasons that he hasn't signed...
a) He wanted to be here with Philbin and waited things out with the Manning situation.
b) Philbin wants him here, but because Mr. Loss and Irish had to court Manning first, he simply had to wait and Philbin asked him to wait it out.
c) Tannehill is likely not going to be there for us unless you are suggesting we trade up. Given the market costs for trading up, I think that is a bit out of our reach.
d) While he has a short resume, it is a very successful resume. Sure, he had a lot of talent around him and it was a well oiled machine to boot, but he still had to make the throws he made, make the reads he made to decide where to throw, played against two pretty decent teams (both playoff teams) but he did so very well, even if it was only a couple of starts. ]
e) I don't know how much or how closely you follow NFL football, but Philbin has been there with the guy for 4 yrs, day in and day out. He's a well respected coach and if he thinks that Flynn can do the job...I think most would defer to his expertise on the matter. Maybe you have some other experience or expertise in evaluating QBs that we're not aware of.
f) MMoore played very well for us last year. However, he didn't play in the system we're going to be running this season. He's not as accurate as you'd like a WCO QB to be. His arm strength is probably comparable to Flynn's though with a slight edge to MMoore. I've been watching MMoore for a couple years here in NC. I've seen MMoore fade in games, where I haven't seen that from Flynn...albeit there is less to go on, but if a young QB is going to fade out, you'd think against the quality teams he has played against, it would be more likely that he would.
I don't know that Flynn is the next Aaron Rodgers but I don't think that MMoore is either. If Philbin takes the chance on him, beings that he will be tied to Philbin's legacy as a HC in Miami, then I can't see where you and I can argue too much...