Here’s the thing: I don’t understand the furor. I don’t get the big debate. I really don’t understand how a low-risk, high-reward trade for Josh Rosen has been framed into the kind of quarterback controversy typically reserved for, well, quarterback controversies.

But the fallout kept falling with e-mails and comments through Saturday night:

“Rosen is awful.”

“The Dolphins overpaid!!!!”

“Wait for a QB until the 2020 draft!”

If you want to say the Dolphins should have drafted Dwayne Haskins or Drew Lock, that’s a valid second guess. But “awful” after one season? And “overpaid” when you got a possible answer at quarterback with the 62nd pick and a fifth-round pick?

And, as far as waiting until 2020, the Dolphins’ trade for Rosen doesn’t exclude that idea. They’ve loaded up on draft picks for next draft already for chips to trade. You could even argue if they start a young Rosen rather than the very-veteran Ryan Fitzpatrick the Dolphins would have less a chance to win, especially early on.

Not that the Dolphins coach Brian Flores named Rosen his starter on Saturday. Or General Manager Chris Grier put any burden of expectation on him. The only hint of excitement over Rosen’s arrival came from the quarterback himself.

Rosen posted a goodbye to Arizona and hello to South Florida on Twitter on Saturday afternoon. It was creative and classy and ended with a joke to his replacement, Kyler Murray, about an apartment being available to him for a good price.

“My bags are packed,’’ he said to Dolphins fans, “and I’m on a flight first thing [Sunday] morning so get ready.”

The question becomes how much baggage he brings.

The primary risk in this deal, it seems, isn’t with Rosen’s still-forming game. It’s with Rosen himself. An undercurrent that he’s too arrogant and teammates don’t respect him has dogged him from UCLA to Arizona to the point Grier said the team received unsolicited calls from past Rosen coaches debunking the idea.

Meet the Miami Dolphins' 2019 draft class. (Omar Kelly) (Omar Kelly)

“They said a lot of that stuff is B.S.,” Grier said.

Said Flores: “You never really get to know a person until you sit with him every day. We did a lot of work on Josh. I think he’s smart, works hard, football’s important to him and I think he’s got an opportunity just like all the other players, to come in here and help.

Of course, Flores and Grier haven’t worked with him to check out just who he is, what he brings. That’s part of the roll of the dice here.

But look at the upside: He’s 22, was the 10th player drafted a year ago, has a year of tough experience with an awful Arizona team behind him and, as Grier said he was told, “has a chip on his shoulder.”

Don’t hold Rosen’s 11 touchdowns, 14 interceptions and 66.7 passer rating as a rookie against him. You know who had a lower rookie rating? Tom Brady, Kurt Warner, John Elway, Eli Manning, Troy Aikman — Hall of Famers all. The list goes on. And on.

That doesn’t mean Rosen is in that mold. It’s just says you need more context with rookie quarterbacks. And the context with Rosen is his team was awful. Arizona replaced offensive coordinators in midseason. Its five starting offensive linemen were hurt early on.

Miami Dolphins general manager Chris Grier and coach Brian Flores talks about new quarterback Josh Rosen during their post-draft presser, and whether he can be a franchise QB. Miami Dolphins general manager Chris Grier and coach Brian Flores talks about new quarterback Josh Rosen during their post-draft presser, and whether he can be a franchise QB.

The line ended the year with a unit that made the Dolphins’ line look formidable: Two players cut by other teams earlier in 2018, another signed off a practice squad and third- and seventh-round rookies.

Then there’s this: The Dolphins’ average cost for Rosen for the next three years is $1.6 million. That alone makes this a no-risk move. Yes, it cost a second-round pick. But that 62nd pick was three away from being a third-round pick. Would that label change anything?

Look, this franchise has been looking for a franchise quarterback for 20 years. They did more than look this time. They made a move for one. If Rosen isn’t certain, they’ll no doubt make a move for another in the 2020 draft.

Rosen doesn’t bring a storm of controversy with him. He might pack too much baggage. He might not prove good enough. But, for the low cost, that’s the hope of a high reward.

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dhyde@sun-sentinel.com