Although I think it was mostly about Mike Zimmer wanting to run the ball and Diggs wanting more targets.
That's what Thielen alluded to when they were both considered disgruntled in Minnesota. Thielen was a lot less disgruntled than Diggs, but I remember some interviews where Thielen outright complained about the running/passing distribution under Zimmer.
Thielen wasn't chirping at all back in 2014. He was just happy to make the team.
He didn't get to play much in 2015 either even though Patterson was pretty much benched that year.
The Vikings were playing Diggs, Mike Wallace and Jarius Wright that year under Norv Turner. Peterson was still the focal point of the offense then and no one was complaining about the Vikings using him too much. It could be argued that Thielen should have played over Mike Wallace, but Wallace was Norv Turners guy and Zimmer basically let Norv call the shots on offense so he could focus on defense, which is kind of what Zimmer always wanted anyways.
I remember Thielen playing very rarely but he made some nice blocks. At the time I thought he was like Chris Walsh who was a 4th string WR who made a lot of good blocks and occasional 3rd down catches but was never a starting WR.
Thielen didn't get a lot of playing time until his 3rd season in 2016 when Norv Turner quit/was fired early in the season and they switched to Pat Shurmur.
That was the year Teddy Bridgewater got injured before the season started and the Vikings traded for Sam Bradford who played pretty well for 15 games before being injured again the following season and Case Keenum took over.
Shurmur had a connection with Sam Bradford who he coached with the Eagles before being hired by the Vikings.
Bridgewater was Turners guy not Sam Bradford. There was a rift between Norv and Zimmer forming already, part of why Shurmur was brought in. The coaching change came along with the QB change. I don't know if Sam Bradford liked Norv Turner. The Vikings were in emergency mode when Bridgewater got injured and I'm sure Shurmur sold the Vikings on trading for Bradford, even though rumors were out there that Bradford was damaged goods.
What you are talking about happened later after Mike Zimmer fired DeFlippo for passing too much the first year the Vikings had Kirk Cousins.
Thielan and Diggs both had 100 reception seasons, but Zimmer was not happy because they didn't win enough games.
Diggs and Thielen are like we did our jobs.
Kind of crazy looking back on all this drama.
This is why the Vikins went with an offensive minded head coach. There was just too much turnover on offense to have any continuity.
One thing coaches want is control of as much as they can. Zimmer felt that passing the ball too much hurt what he cared about, his defense.
Anyhow Thielen was Mr Mankato before Diggs got there the season afterwards and was Mr Mankato that year. But Thielen had to wait for his 3rd season to get a chance to shine and maybe never would have if the Vikings had kept Norv Turner. Just to try to bring this all back to my initial post about it.
Looking back at this saga you can see how the coaches relationships with the QBs changes everything. If Teddy Bridgewater was not injured then Norv Turner keeps the job most likely and hard to say if Thielen would have gotten his shot or not.
Eta- sorry I thought this was the why do teams have QBs who can't play thread not the Jefferson thread.