Many thanks for all the support and nice comments!
After having a go on his bike, it really was an eye opener. Something like the one he has could make a great utility bike for someone that is active and wants to use the car less, as with the right panniers you could get a good few days shopping it but with the extra power it could save your legs for tomorrows pedal powered ride on your race bike, or spare your legs from the pain of yesterdays ride.
After watching him have a practice, and then plotting the route he did on his own Im sure its also a good way to get into, or back into the hobby. With there being shopper bikes, MTBs and even road electric bikes theres one to suit you, and although they havent had the throttle since 2016, as someone above mentioned, if you can turn the pedals you can move. What suprised me was you dont have to push against the gears once you are moving (a pedal stroke or 2), just turn the cranks and you will move.