I take it you have never heard Don Edwards yodel? Or Bill Staines. Or Suzy Boguss. Granted there are some pretty grim yodelers out there. And at the risk of starting a fire, Jimmie Rogers wasn't all that hot, but he was enthusiastic.
I have a cousin a million times removed, in Austria whi was a recorded yodeler, Rudy Meixner. Maybe thats where my brother and I get the yodelrs genes. Altho' we aren't in the same league by a mile.
I find daily doses of "Yodeler's Tongue and Tonsil Tonics" help get those notes that even Vise Grips can't reach.