What about the others that started similar ages? Seems like they’re let off the hook for playing when they were younger.
I feel like it's pretty common for guys who were nailed-on starters at 18 to have hit a wall by their late 20s? Especially forwards.
In his 17 year old season, he started 19 games in the Premier League. In his 18 year old season he started 24. In his 19 year old season, started 35.
Wingers and forwards that were starting that much and that young don't seem to have good longevity! By the time he was 28.5, Eden Hazard had played almost 30,000 league minutes - more than Sterling currently has, and at a younger age. He only played a few thousand more. Rooney is of course another classic example.
And I cannot think of many attackers who were nailed-on starters at 18 - and playing a lot in multiple competitions - who played at a high level deep into their 30s. Cristiano Ronaldo is honestly the only one who comes to mind. Other star players with good longevity weren't starting 20+ matches a season until they were 20 - even Messi didn't have a season of 25+ starts in La Liga until he was 22.