Mbappe did have some luck in terms of not suffering any injuries that could have hampered him reaching this milestone as fast as he did.

I recall Messi suffering from muscle injuries at the start as he was breaking out, which really sorta prevented him from having a consistent run of games.

Unlike Mbappe, Ronaldo had a much steeper learning curve before he really established himself and was regarded as star player. In that aspect, when mbappe, broke out he was regarded as one of the top talents to ever play.