All three, very strongly may be argued, we’re massively overplayed whilst developing and hampered their long term qualities, no?By age 23, Wayne Rooney had played 315 times.
By age 23, Dele Alli had played 339 times
Ryan Sessegnon isn't 23 yet and has played 202 times
So, we could see it as the reverse, that he has been gradually introduced to mens football and May sustain a top level (relative to his potential) for many more years, no?