Of course Kilian is beatable, he's been beaten before, and by runners he totally outclasses like Dakota Jones. The thing you need to remember about Kilian, though, is that most seasons he races waaaaaaay too much, and he's hardly ever in peak shape because of it. Also, he spends several months a year focused on alpinism or skimo, barely running if at all.
A guy that's competitive in short skyrunning races, vertical Ks and 100 mile ultras, plus some longer FKTs - that's range. A guy that's been at the top of the sport for the past 10 years, who won UTMB when he was 19 or 20. A guy that, because of his skimo racing, gets tested more in a yeat than all American ultrarunners combined.
You guys live in your niche of smooth runable races with watered down fields, and get slaughtered when you race abroad. Too much social media posturing, product pushing and online coaching, and not enough talent or comitment to the sport. Jim Walmsley is now exposing the general lack of talent over there.
As for Kilian on the roads, we'll never not what he could have done if he trained and developed as a road runner all these years. And who cares? He's a mountain runner.