Yes that is a lot. I'm making no attempt at going into it in that depth. Points aren't everything but they are the single most important thing.
Everything you have said about him seems to assume that he has always played on the top line in Edmonton. That just isn't so. He has spent a lot of time on the 2nd and 3rd lines. He has not always played with either Leon or McDavid. They were not even with the Oilers for much of his career. He played with one or the other for much of the last 2 years - and he was very productive. No surprise, he should be with those linemates.
No, I don't think I said I expected more than his avg production. A 60 pt 2C would be a nice improvement over what we have had and have now. 60 pts is good for a 2C. It is not great. The great 2C's score ppg or better.
No, I don't think I ever said he was better than Huberdeau or Couturier either. In fact I know for certain I never said that. He has scored 6 more pts than Huberdeau, in 68 more games. That doesn't look like better. He has scored 41 more pts than Couturier in 43 fewer games. That looks good but Couturier was used in a defensive role until the last 3 years. He has scored very well in a more offensive role and is outstanding defensively so I wouldn't say that RNH is better than him either.
A 60 pt 2C costs a lot. Kesler cost Bonino, Sbisa and a 1st. Johansen cost Seth Jones. Its tough to say what RNH might cost on his next contract without knowing what NHL finances are going to look like. But going by current standards, I would guess it would be at least 7 mil, maybe 7.5. And it could be more if he went to market. I think his ask will be inflated because he has been overpaid for several years and will want a raise. None of which has anything to do with him being a bad player. He is not garbage, he is not bad. He is a disappointing 1st OA and was given too high a 2nd contract, apparently just because that is what Oilers automatically gave their 1st rd picks. At least until Yak.
With a 1st OA pick you are expecting an above avg 1C. He never achieved that. He is an avg to slightly above avg 2C. Which is better than we have had.