Seems a tragedy and luckily no loss of life , as for his hoarding
I imagine he bought and paid for the bikes HIMSELF, probably many of them when nobody else wanted them . at this stage in his life he's probably that eccentric bloke ( or more likely the lunatic or idiot down the road who waste all his money on that old shit ) .
Time passes and things cycle (no pun intended ) and this thing called VMX is created and takes off. Suddenly he becomes that miserable prick down the road who's got all those cool old bikes that he paid nothing for ( the fact that he bought them with HIS money and has stored then on HIS property for 20 yrs and put up with the snides of the clever bastards who said he was a Lunatic) is lost on them .
He wont sell anything , WTF should he its his to do with as he chooses ( see above ) the reality is probably that the clever bastards who were laughing for 20 yrs wanted to get bikes from him but wanted to pay what he paid for them not current market value .
It irrelevant now as there all gone
but I have seen this scenario a few times both here and in the UK ( fortunately not the firey end ) but the bullshit small minded attitude of those who feel entitled