This your list of players that aren't late bloomers?
Rooney, Englands best ever player.
Kane, englands current best striker
DCL, a lad that hasn't even had one full season operating at the level he's playing at now.
Defoe, who had a 1 in 3 strike rate throughout his career until he was 27 which by your opinion makes him a late bloomer!
So to recap one of your list is the best English footballer possibility ever, one is a world class striker, one is young and showing promise but hasn't done it constantly (one thing that you said make him a late bloomer) and the last is a 1 in 3 striker who didn't become improve on that till he was 27 (again your definition of a late bloomer).
I mean Jesus christ lad you're having a mare here ain't you.
The issue is you may have opinions but you present them as facts which their not as they are provably wrong. Then when pulled up on them you use the old "its my opinion" card. Which is fine but even though everyone is entitled to their opinions it doesn't make the opinion valid or right.
People have the opinion that the world is flat, their wrong but they have that opinion and they are entitled to it. At the end of the day though they are wrong. Just like you are about Danny ings
Although I must apologise about the "WRONG!" part of my previous post. That was a bit of a knobish thing to do, so sorry about that.