I started a thread a few months ago about how utterly unrecognizable the religion of my uprbringing is now.
I have been out since late 1990, just before my 21st birthday and even after not getting online until 2000 I did still recognise it. Not any more.
In a matter of days, people born in the 1970's will start to enter their 50's. Me among them. When I was growing up, to make any kind of reference to the world being around in 2000, let alone 2020 would have been considered extremely weak. I lost count of the times in the 70s and 80s people used to say to me at meetings that I would never finish school. Better to pioneer and fulfill my potential that way for the short time remaining.
Now... my horizon is filled with things like my grown up daughters having kids and planning their weddings. And for myself planning retirment within the next decade. Far from not finishing school, that event is now some 30+ years in the past!
To answer your question what has changed? Style over substance certainly, but ultimately just the same old religion with its "end any day now" mantra.
They'll still be at it when I'm long dead.