How standards have changed with time...'late bloomer' used to be someone like Vardy who bursts into the big scene past his mid-twenties. Haaland is 20 years old. He is definitely not a late bloomer in my book. The only way you can say that for him is in a comparison with a player like Rooney who became famous at 16. If that was all you meant, my apologies, this is not a dig in any sense, anyway.
And I agree, Haaland will most likely surpass Rooney's output but that shouldn't diminish Wazza's contribution. He was playing in a completely different time. Now it is an attacker's game. VAR definitely helps attackers and the rules have become much stricter for defenders. Rooney was a pain in the a$s for any team he played against ever since he was 16. Roaming, marauding, physically imposing, creating and scoring. Just writing this got me reminiscing of his early days...What a player he was! Super happy we got to experience his career and see him perform for so many years.