I do not disagree with the ageist argument.
It is about a personality that is with a person no matter what age. Sadly, society generally seems to think those personality traits (energetic, enthusiastic and optimistic???) are more unusual in older people! I try not to be lethargic, apathetic and pessimistic!
Frank Field, Labour Peer has died, aged 81y.
To think that London, or anywhere else for that matter, does not belong to any one demographic