He doesn't need to have the record to be the greatest goal scorer in NHL history. He already is and has been for a long time.
The year (81-82) Gretzky scored 92 goals in a season, Billy Smith was the Vezina Trophy winner. Billy Smith was a 5'10" 185 lb guy who posted a .898 save percentage and 2.97 goals against average that year as the BEST goalie in the NHL. In today's NHL, Billy Smith would be one of the smallest goalies in the league and those Vezina-winning stats would rank about 40th in today's NHL. 1982 Billy Smith ≈ 2025 Juuse Saros. When defenses got tighter and goalies got bigger & better in the 1990s, Gretzky averaged 27.3 goals per 82 games.
Here's the stat comparison between Gretzky and Ovechkin at ages 30-38:
View attachment 13454599 has even said that it was easier to score in his day. The only thing Ovechkin had against him is he isn’t Canadian