"Andre S." wrote

they also think its a simple matter to attach standardised number
plates to every bicycle!
none of which have been designed for such.

Err, what crap is that? The bicycle I was riding in WA in the 1950's
had a standardised numberplate, as did everybody else's. Yes, we had
registration, it cost 2/6 ($0.25) per annum. Attaching the numberplate
was not a problem.

Theo