The answer to this question is of course No because older people don't know how to buy and sell Bitcoin they don't know what is crypto so this is impossible, also some people think that crypto is haram but in real crypto is halal. that are 2 big reasons and some are too much poor so they cant buy BTC.
It's because those old people don't want to learn how to use a cellphone, they're not interested with cryptocurrency etc. Not all young people are owning Bitcoin though, even they have heard about Bitcoin in their own cellphone.
As for Bitcoin is haram or halal, it depend personal choice and belief.
If we're talking about personal problem, obviously not everyone will own Bitcoin especially for the country which has no internet connection.