The closest he got was 7 points of 60, once, and 8 points another time. I don't think that's particularly close. And he's never been 30-30, not even this year.
So no, he hasn't been "basically" a 30 goal scorer for a while, he's never been a 30 goal scorer until this past season.
Hopefully it's the new norm for him, but I doubt it he ever replicates 50. I could see him becoming a Johan Franzen type and potting 30 a couple more times, but he's still not a 30-30 guy because he's not enough of a playmaker to get enough assists, never has been.
Kreider has always more like a 25 and 25 player. To me, that's a guy I want more along the lines of a second line player who, if you have tremendous forward depth like real championship teams do, sometimes plays third line minutes cause you have an embarrassment of riches.
He's not a Crosby/Ovechkin, he's not a Rantanen/Huberdeau, he's not a Pastrnak, DeBrincat or Svechnikov.
He's like a career 50 point player who is an offensive-minded guy (ie, we aren't talking about a Jesper Fast type who fits in a support role on the first line, Kreider is the shoehorned as the scorer on the first line), who at 31 had an explosion, but his career to date is just not a top line player on a Championship team, yet the last two times we've gotten to the Conference Finals he's been one of the 2-3 most important scorers for us and we have been shut down when we get that far. It's because he's not capable of being one of your top scorers when you get that far against better teams.
He gets tremendously overrated here.