Everyone seems to have an opinion about Adam Gase.

Columnists, talk-radio hosts, fans and anonymous sources all have something to say about the Jets coach. But there is one opinion that matters more than anyone else’s.

Jets quarterback Sam Darnold is the future of the Jets — good or bad. Darnold’s success or lack of will be the biggest factor in whether the Jets can end their playoff drought or watch it stretch deep into the next decade.

No one’s opinion of Gase is more relevant than Darnold’s.

“I can’t say enough good things about him,” Darnold told The Post on Thursday.

The 22-year-old quarterback probably said something similar to Jets CEO Christopher Johnson back at midseason when they chatted before Johnson made the decision to announce he was bringing Gase back for 2020.

This injury-plagued season has not gone as Darnold or Gase hoped. The Jets missed the playoffs for the ninth straight season. The offense is ranked dead last in the NFL. Darnold has shown progress, but not the massive leap people were hoping to see.

Still, Darnold said Gase is the right guy for him and the Jets. Darnold described a football junkie who works around the clock to make the team better. He said he and Gase communicate “as much as possible” through FaceTime, texting and in person.

“He loves coaching and he loves being around the guys. He loves football,” Darnold said. “He just loves the grind of being in the building and trying to put certain plays together. He can’t get enough of it.”

Among Jets fans, though, Gase is about as popular as a colonoscopy. The honeymoon seemed to end before it began. When the Jets started off 1-7, the cries for Gase’s firing grew loud. But he was able to stabilize things and the Jets have gone 5-2 in the second half of the season.

Along the way, some misconceptions have developed about Gase. Unprompted, Darnold brought up how accountable Gase actually is.

“He’s going to be the first one that’s going to take blame,” Darnold said. “He puts a lot of weight on his shoulders. That’s what you want in a head coach and a play-caller. He’s going to put everything on himself.”

Darnold said Gase is not shy about getting on him if he thinks the quarterback made a mistake.

“He’s straightforward. He’s going to let me know when I screw up,” Darnold said. “If he thinks he screwed up, he’s going to be the first one to let me know, ‘Hey, I put you in a bad position there.’ It’s funny, I feel like most of the time he tells me he did me wrong, I could have made the right decision.”

One of those instances occurred in the Jets’ win over the Steelers last week. T.J. Watt got to Darnold in the second quarter and stripped the ball from the quarterback, giving Pittsburgh great field position before halftime. After the game, Gase took the blame, saying it was a bad play call.

“That was a perfect example of he thought he called a bad play and I told him, ‘No, you called a perfect play. I should have spit the ball out,’ ” Darnold said. “We were on a good roll there to end the second quarter. I held onto it a little too long and T.J. was able to strip it. He called a perfect play in that spot, I thought. He didn’t think so.”

A critical point in the season for Darnold and Gase came after the loss in Jacksonville when the two sat down for a long chat. Darnold, who had been trying to run whatever play was called, finally felt comfortable enough to tell Gase what was working and what was not for him. They hashed things out and Gase made some changes to the offense to bring out the best from Darnold, who has gone from throwing eight interceptions in four games before that sit-down to four since.

“It was a really candid conversation of how we feel like we can be better as a team,” Darnold said. “He did everything in his power to make things as comfortable for us as an offense and for me as a quarterback. I can’t thank him enough for even sitting down and listening to me, the 22-year-old that I am and all the experience he has an offensive coordinator in this league to really want to listen to what I have to say, he’s a great guy.”

Choose to think what you want about Gase, but the Jets quarterback believes in him. That’s the only opinion that matters.