No you don’t have to be registered disabled Gonegirl and not all scooter users are fat, lazy or bad drivers. As a scooter user I take exception to that to be honest !
Sometimes driving on the road is the only option to get from a to b. Firstly, there are people parking part on the pavement meaning the only way to get round is on a road,
Secondly, even new estates which have some drop kerbs do not have them all in the right place. I visited an outside shopping centre where there were drop kerbs until I got to a junction where there wasn’t . No choice but to back track , use the road which involved a really busy junction .
As a long time driver I have no problem using my scooter on the road but I agree if you have never driven then I see no reason why a road test shouldn’t be compulsory .