The slack geometry, tall headtubes, long top tubes, and floppy offset forks make climbing pretty much impossible on current mountain bikes. Obviously they're only designed to run downhill at ski resorts, and I hate it. A mtb designed for climbing would look like the very first rigid mountain bikes from the 1980s. I live and ride in the mountains and what I see are people trying out their new bikes on the hill once or twice, and then they're never to be seen again. The really ambitious guys keep lowering their forks, then eventually install rigid forks, but they can never overcome the flawed geometry inherent in the design and eventually give up. This insane geometry has even infected touring and gravel bikes. Meanwhile there are new cross bikes with aggressive aero road geometry that will fit 27.5 fatties, yet they're carbon and will no doubt break the very first time you fall over. Everything is designed for maximum frustration and to waste money.