I am of an earlier generation. Do you think due to the cultural differences bi, gay, lesbian acceptance that the younger generation is more open to the acceptance of this?
No, this is a false-equivalency argument by construct. Another example: "Due to the acceptance of electric cars as another form of transportation than traditional diesel / gasoline engines, finally, do you think the younger generation will also accept nuclear-powered cars?"
What has one to do with the other, really? Just because a new thing A now gains traction over the old concept B, this in itself does in no way, shape, or form indicate that new concept C will also succeed. It also doesn't show in itself that the young generation is "more flexible" or any thing like that. They are as pliable as every new generation has been. What you are seeing is merely technology developing and the zeitgeist glacially moving. The Overton-window was chipped just a tiny bit to the left of it's original frame and now the young ones accept gay marriage. That's all (if you order acceptance of fetishes etc and say being a zoo is farther in the same direction, you could say they are somewhat "closer" to it, see the Overton window).
When you were young your parents thought that because of your leather-jacket you surely will also have children out of wedlock, do heroin, and join the communist party. When the current teens are old and sit on their verandas, discussing their pronouns and their backpains, they will look at the teenagers of the future with their bio-slime dresses and wonder (as incorrctly as all these examples are) if this now also means that they will naturally then all fuck trees, join the anarchistic pogo party, and consume copious amounts of medical cocain.
Growing old happens to all of us, don't worry.