I don't understand how a positive attitude towards younger climbers is essential to an older person bouldering better in later life?
it is maybe biased by the observation of the "older" (40 something) climbers i know...
the ones who generally perform better seem to mix with younger generations.
It's probably simply a good way to keep boredom away and find a source of motivation, and possibly new tricks, esxpecially if you've been climbing in the same area for 20+ years...
anyway, among this sub-group of oldies, the
most successful are the ones who have a balanced position about their younger partners' physical abilities - not overly competitive or jealous, yet not falling either in that kind of "i'm old, weak and often injuried" self-commiseration...