Why would that be cancer?
You would still have to produce them if you lose them.
Just not sell them. And they could even bump up the production cost to offset their ‘rarity’. Making them more expensive to build than their ‘regular’ version.
You can take the chance to fly them, but I know that I don’t. I like their design too much to part away from them in an explosion.
As they are in limited supply and that you cannot make more of them eventually they will run out.
And from what I have read so far, other people do not like to invest so much time to end up with a BPC either.