Over time we get used to dumb names and they just become normal. Wild, Avalanche, Angels, Commanders, Guardians, Mighty Ducks, Packers, etc all kinda dumb names, but people gain attachment and the cringe wears off. I don't think Yeti is the best name, but it is inoffensive and they can create a good cracked out mascot. That's enough for me.
It has felt like the most popular option (at least in the social media world) beyond the joke names the whole time. I'd be shocked if it didn't have the most votes by a good margin.