I think you have Gretzky's seasons confused
He hit 205 points in 1984 in 74 games. Also 87 goals.
In 1982 - he hit 212 points (and 92 goals). Played all 80 games
To me those are his 2 best seasons, with 215 coming in #3 (though the 163 assists that year is the hardest of his individual season record to beat).
Matthews flirted twice with goals per game pace. Injury hurt him in 2022, and I think he had an injury too at end of 2024 (or just a cold streak?). The bar was pretty close for a goal per game...and yes you need ~10 more goals to hit 92. It's a huge number - I just think it's somewhat more attainable than 215.
If you put a Matthews or Ovechkin like goal-scorer on a same line as a peak McDavid or Crosby, I could see someone make a run at ~85-90+ goals again in a perfect storm of a season. Meanwhile - McDavid wouldn't go near 200 points no matter who his linemates were.