Nah devil is always in the detail for me and simply thinking 160 games and 40 goals for a young lad is daft. When you get players in their early 20's they won't always hit the levels they will later. A prime example is England's current first choice striker Harry Kane. DCL has bagged 29 in 69 (36 in 80 in all comps) in the two previous seasons. He's clearly come of age in terms of performance, hence international honours etc. The lad has always had pedigree too as a key member of the U17 world cup winning side (scored the winning goal in the final).
If we look at Kane, up until the age of 22, he'd had loan spells across League One, The Championship and PL and only amassed 19 goals in 91 games. But he learnt alot and by his mid twenties he had a better than 1 in 2 record which he has sustained. Whereas DCL's trajectory might not match that, its clear he's a much better player at 23-25 than he was earlier than that.
Rashford is a good example of someone who is the opposite and hasn't developed like DCL. He has lost his way and actually his record is deteriorating whereas DCL's was improving. Its still a risk in case this injury has long term ramifications, but there has never been any suggestion that's the case so far. He's come back into a struggling side and just hasn't picked up where he left off - which was as one of the best strikers in the league in terms of output. I think if you took the top 6 scorers out of the equation (a lot easier in those teams), DCL would have been bang there in 2020/21 along with Bamford as the next best options. Indeed I'd imagine the year previous only the likes of Ings, Vardy, Jiminez would have done better. Not bad going for someone his age.