I too suspect he is making a point.
It’s quite an interesting point though.
If I identify as 65 can I start my pension now please? Have winter fuel allowances? Get a free bus pass?
If I eventually for another 60 years after self identifying as twenty years older than my biological age can I claim the record for the oldest ever woman when I live to 140?
Alternatively can I identify as 7yo go back to school, have my parents claim CB, claim cheap travel, cheap entrance to activities and attractions, join in at soft play, be treated in a children’s hospital and use the same loos as the other kids at school?
The answer is “no, your age is a biological reality” regardless of how you feel inside which does rather beg the question...