I'm not so sure about all that. Seems to me there are plenty of people wanting to be beekeepers. And there are older beekeepers who will give them a chance, especially now cos without imported labour some beekeepers are finding it hard to get staff. On the other hand some can't afford to pay, but that's not about an inter generational or old vs young thing, it's just about the harsh reality of the honey price squeeze at this time.
Where I am in our biggest city, sometimes the country people may have already been successful with other types of livestock so therefore assume they can do beekeeping just as easy, they can be in for a rude surprise. Whereas city people are more ready to accept they do not know everything and can be more open to learn and take advise.
As to the old vs young thing I don't think there is an issue. I'm old, nearly 70, but have heaps of young people keen to hang with me, go in the truck and do some bee work so they can learn. I'm also surprised how respectfully they treat me, when I think back at how some of my own generation when they were young, treated old people badly to the point I was sometimes embarrassed, I think the behaviour of young people now has improved, things are better than 60 years ago.