It's not about comparing ages of anything. It's that people like you have no problem calling that season shit, but when you actually look into it, it was still better than a season like Crosby's 17/18 or his 19/20, but you won't find a single person shitting on Crosby for either of those 2 seasons (hint, because they were still great seasons).
And if you really want to make this about age lol, Ovechkin's 71 point season was in his 30 year-old season, and the 2 seasons I have compared it to were Crosby's 30 and 32 year old seasons lol. So not sure why you even brought that up. If you want to bring up age into anything, Ovechkin just had his 34 year old season and won the rocket, meanwhile a 30 and 32 year old Crosby was still having issues cracking the top 30.