If Triple H is openly breaking kayfabe, and he's not currently goofy "DX" Triple H, then it's either one giant rib, or they're trying to get Lesnar to quit out of frustration.
Wrestling is enjoyable because it blurs the lines b/w fiction and reality. HHH, WWE, or whomever can try to rationalize it all they want by thinking that a fan being upset by HHH no-selling an armbreak on tv is like a fan being upset because Robert Downey, Jr isn't Iron Man when he's interviewed on Regis and Kathie Lee (wow, I'm old!). But that neglects some huge points.
1) wrestlers play one person, actors dozens/hundreds
2) the perpetual serial nature of wrestling compared with series television and one-off films
3) it's pro wrestling - it has always had fans insomuch as fans believed some legitimacy in what they were seeing (i.e., Undertaker isn't really dead, sure, but Yokozuna really put him on the shelf for a long time when he was thrown in the casket at the Royal Rumble)
4) WWE's current semi-emphasis on taking storylines off the air and onto social media shows that they know they need to work hard to re-establish #3 above by going back to blurring those lines b/w fiction and reality.
Maybe I shouldn't rant. But Triple H being on tv during that match is incredibly disrespectful, and certainly deliberately so. I say deliberate because any pro wrestler should know better, let alone one whose knowledge helped land them a position of power and influence in the company, a place at the booking table - they should know better than to
up a huge, front-page-of-wwe-dot-com storyline, by ignoring it in a very public fashion on a highly popular boxing event. This takes Duggan and Shiek's marijuana faux pas to a whole new level (they weren't punished for weed or b/c they were arrested, mind).