In reply to UKC Articles:
Not sure the change has been that dramatic. More incremental - more of the same and at a higher level. I think the decade which saw dramatic change was the 1980s, at least in rock climbing - emergence of ‘pro’ sponsored climbers (although they weren’t the first to embrace structured training - that was already a thing for some top climbers back in the 1970s), development of sport climbing, rapid increase in sport and trad standards, sticky rubber shoes and international comps.
1990s for the genesis of light and fast Alpine style ascents - for example Mark Twight.
Not sure when bouldering really took off in terms of number of boulderers and grades - probably 2000s?
The first modern style climbing walls were in the 1990s.
The main thing the 2010s brought us was social media, so we get to hear about stuff a lot more often and a lot quicker. That makes it sound like what’s happening is revolutionary. In fact it’s mostly just a continuation of the upward trajectory which got its first major boost in the 1980s. This is not to detract from today’s top climbers - just to say that they aren’t exactly revolutionary.