Yea, so a mis-translation. That’s not what we call them in english.

These are not fatbikes. Fatbikes are normal pedal bikes with big tires that are good in snow.

These are Fat Tire e-bikes. You should always be calling them ebikes when discussing them in English. Perhaps this is a mis translation.

OP just desperately wants to post shit with no care as to the quality of what they are posting.