Not going to reply to every 'minutiae' of your argument on line, or a discussion on what you think 'real racing' may or may not be.
So here's the deal...
The rules are in place. Have been for a while.
With 2 months to the first race I'm not inclined to change it now.
One bike in the race, that has been our rule for a while now.
If a bike breaks down within 20 minutes of the start and the #2 bike is registered as the alternat bike, tech'd and the riders registered on that bike......have at'er. (And that's a concession/departure from the actual rules!)
Otherwise , no dice. Not just to get practice laps and possibly interfere with others racing, not to mention the difficulty in keeping track of a new bike suddenly appearing.
We wouldn't allow it in a sprint race and this is no different.
Percy