That is literally the definition of a 30 goal scorer. Someone who potted 30 goals in the NHL Let’s not pretend AA shot 20% and is on the wrong side of 30. A poster called AA a 30 pt player and he scored 30 goals in that season so I’m not quite sure what you’re trying to prove with your statement.
I'd define a 30 goal scorer, as someone who can reliably score 30 goals.
Someone who 'once scored 30 goals', means that was their outlier season, and it will never ever happen again.
If you're giving value for a 30 goal scorer in a trade, you would hope they could reliably score 30 most seasons.
I'm not even sure AA is going to break 17 this year.
This entire situation with AA resembles David Clarkson.
If you pay AA like a '30 goal scorer', I expect his contract is to be considered one of the worst in the league for a the entire duration of it.