Should we call a jet ski a water machine? Or how about we call any water going vessel a water machine? Let’s start calling automobiles pavement or asphalt machines. And we will call all aircraft air machines.
Why get worked up over it? It’s been that way for years in some regions. Here it is still snowmobile - likely because they are mostly recreational. In Alaska those vehicles are necessary during certain months of the year, which may be why the vehicles came to be referred to as “snow machines”.
Still snowmobile at our house ..... guess if you own it you can call it what ya want.