This makes sense to me and, if he stays healthy this season, it should bump up the top end to the 8.5M range. I can't see Chevy going above Scheifele/Helle's 8.5 AAV but as a percent of a rising cap it will be less.
Those who see him as just another 60 point player are entitled to their opinion, but, again, playing the role of Ehlers' agent, I would support him betting on himself in the UFA market.
There are almost certainly GMs who will pay him on the high side of the range if the Jets aren't interested. If he stays healthy and is given the right opportunity, he could really shine. I look at his play this year and his stats/60 over the last number of years as much more predictive than a small playoff sample (just like playoff Helle). The only risk I see, and it is a big one, is whether his body will last.