Sure, you may have grown up reading the Vedas that discussed all kinds of encounters, including extraterrestrial. However, what will be the actual reaction when they are in front of you?
I believe Buddhists will handle it better, however, it will still be a shock.
Even for me, when they get here, in person, i won't know what to do with myself.
Especially if they come out and say, "Hey, old friend".
Oh I grew up far from the East, very much in a setting of hardcore grittologists with some bible thumpers mixed in!
But I always knew that something was seriously wrong even since I was maybe 5. When I was a teenager I read every single thing that Daniken had published, and a lot of other things as well.
Actually meeting very alien life forms would of course be, well, at least special haha!
Still I do think that the East will adapt to the news without skipping a beat. The materialistic West definitely would not.
And then of course disclosure is more or less here already, for those who follow the developments...