He's no Jagr and Jagr didn't even get paid that much.
He has crushed all Jagr records so far (but we can't know their trajections jet), but I don't think you can compare salaries from 25 years ago.
Comparisons to latter days Jagr are not fruitfull since Jagr might be one of a kind with his longevity, and who knows if a serious injury ends Laine's career next season.
If you set the baseline with Little getting 6.5M (and 5.3M AAV with a longish contract) and Draisaitl getting 8.5M, no doubt Laine's value in couple of years should be double digits.
I guess and expect more like 8x8 for Laine and while that is really cheap for him, that would benefit both Jets and Laine with moderate cap hit for the Jets and better Stanley Cup probability for Laine as they can keep some good depth players with the discount.
Scheifele contract was a jackpot for the Jets at 6.1M while Little contract is just way too expensive tbh and may backfire when Wheeler, Laine, Roslovic and Connor will be signed.