Is The Fat Tire Mountain Bike The Next Big Thing?

Fat tire mountain bikes seem to be the craze nowadays. I’m looking at biking more to be greener (pun not intended). I have a full-suspension mountain bike, but I don’t like it for the street.
Some say (LOL) I am a big guy, and the full-suspension mountain bike shocks seem to absorb my pedal power. I was at REI looking at the hardtail bikes and saw a cool, fat-tire mountain bike. The fat tire mountain bike has huge, fat, knobby tires that are said to ride over any terrain. They told me they even perform well over snow and sand.
This sounds like the perfect all-season type of bike for me. When I took it for a test ride, the fat tire mountain bike absorbed bumps very well, similar to a full-suspension bike (some fat bikes have full suspensions). I am unsure how they do off-road, but I always have my other full-suspension motorcycle. I am torn between getting a full-size folding bike or the new fat mountain bike.
Some companies have attached electric motors to fat tire mountain bikes to add a third possibility. Check out the video below and tell me what you think. They say this fat tire mountain bike can do up to 45 mph. My potential minimalist lifestyle will have me rarely driving my car again. I can go to most places I need to go on this fat-toned mountain bike, and I love it. Fat Tire or Folding Bike, what do you think?
Mongoose 26 In. Dolomite ALX Fat Tire MTB, 16 Speed, Medium Frame, Gray

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26″ Mongoose Dolomite Men’s 7-speed Fat Tire Mountain Bike, Navy Blue/Red

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Mongoose 26 In. Malus Fat Tire Bicycle
