Are they talking about fatbikes or ebikes?
They’re two different things.
E-Bikes, apparently. Fatbikes is their generic term...........
"A fatbike (also called fat bike, fat tire, fat-tire bike, or snow bike) is a bicycle with oversized tyres, typically 3.8 in (97 mm) or larger and rims 2.16 in (55 mm) or wider, designed for low ground pressure to allow riding on soft, unstable terrain, such as snow, sand, bogs and mud.[1] "