The key phrase was "at that stage of his career".
Here's a table showing assists by HOF forwards, post expansion, ages 26 to 33, minimum 500 games (Ovechkin played 609 games) -
Player Season Finder | Hockey-Reference.com
Ovechkin isn't on the table because he's not in the Hall yet, but he has 240 assists from ages 26 to 33. That would rank him 5th lowest (Glen Sather is listed here, but wasn't inducted into the HOF as a player) - ahead of only three primarily defensive forwards (Gainey, Carbonneau and Keon) and perhaps the worst HOF forward post expansion (Gillies). That's not exactly great company.
On a per game basis, Ovechkin is 4th lowest (behind only Gainey, Gillies and Carbonneau). Even if we reduce the cut-off to a very low 100 games, the only other HOF forwards with fewer assists per game is Dick Duff (another weak pick).
It's true that Oveckin spent most of his career in a low-scoring era. Hockey-reference.com gives him 275 adjusted assisted during that span. Sorting the same table by adjusted assists, he ranks better (37th out of 46), but still not great - and mostly ahead of either those same defensive forwards, or low-end HOFers (Ciccarelli, McDonald, etc). On the other hand - his adjusted assist totals would be surpassed by a bunch of players not on the table (because they're not in the Hall yet) - like Thornton, both Sedins, Jagr, Zetterberg, Datsyuk, Iginla, Bergeron, and Hossa - so that pushes him lower still.
The point is - Ovechkin has been 3rd in scoring over that these years (2012 to 2019 - ages 26 to 33). I'm not criticizing him for having low assist totals. That, in isolation, doesn't mean anything. But saying that he's been 3rd in scoring over the past eight years is a much better indication of how he's played, rather than saying that five Richard trophies trumps the fact that he's been out-produced by a couple of his peers.