Climbing has always gone on underground.
From the big bolt climbs of Ben Bentham in Oxlow, Busters journey across the roof of peak cavern vestibule, Malc Taylors esoterica in Eldon hole, (recently repeated, and a new route added up the west wall opposite https://www.ukclimbing.com/logbook/crags/eldon_hole-27090 )
Dave Macleod climbing out of Jingling in prep for his free version of busters route at Peak cavern as seen on TV.
Its nothing new, and as Mark points out, those who live in glass houses, shouldn't throw stones. Cavers, collectively over the years have been totally responsible for the desecration of flowstone formations in their quest to explore further, which may well be excusable in the first instance of virgin exploration, but these formations often then just become part of a trade route and suffer accordingly.
I was expecting to see much worse when I clicked on the video, snapping stal, avalanches of loose rock being gardened and crashing down the formations etc etc.
Looks like they placed a few bolts and gingerly climbed out. No worse than any cavers actions underground.
All that being said, its a total publicity stunt and one of the reasons that James Pearson bugs the life out of me. Impressive as his climbing is, and he's genuinely one if the most talented climbers in the world, he's just at total media whore. Everything he and Carloline do is done in a total Social Media/Sponsorship frame. Even worse than Ondra so I've very little attention span for anything they do really.
So from that angle, I'm perfectly happy for them to be called out on it.