To answer the original question. Yeti is still very much in the game. I spoke to my upper level contact at Yeti yesterday and asked him the same question. Per Yeti internal yesterday "we just got out of our 5 year planning session". So that tells me they are still in the game a big way. Especially if they are planning the next 5 years. He also related to me that the 2022 release will put Yeti back on top of what is NEW and on top of the snow bike game.
Yeti came out huge with the Fat Boy Slim in 2020. It's design with the 12" wide track and 5.5" rail spacing is at the top of it's game and incredible to ride!!!! A129FR is so nimble it feels like a 120 on the hard pack and set up snow, but has the flotation of a 129. Same goes for the 137MT, it feels and handles like you are on a 129, but you have the monster flotation in the soft snow that will outclimb an ARO3 with out the bulk of a 3" paddle pulling down the motor from the load of a big paddle.
So yes I think Yeti is still in the game and staying at the top of the pack.