Not done it, but regularly ride all the trails that they have been using. I can promise you that it is 1000% more epic than the videos suggest.
Nothing wrong with being the wrong side of 40. I am 43 and only returned to downhill/enduro style riding last year while out in Madeira for the winter (perhaps the ultimate baptism of fire).
Having been firmly bitten by the Hugo, I was back out this winter and have only recently returned from 5 months out there (December through to May) where I was out on the trails up to three times a week. Certainly a steep learning curve and I will be heading back out at the end of the year with a few mods for my Canyon Strive (which I keep out there) including 200m rotor for the back and a new air shaft to bump the fork up to 180mm. You can never have enough travel or braking out there.
Absolutely 100% do it!