I fully agree with what you say and that is the argument i was making on the other thread.
But if you have a look at it you will see:
1) Experienced captains saying they would rather have a rookie cadet FO rather than an experienced FO who had been through the GA route.
2) SLF saying that it did not make any difference to them.
I was happy to continue arguing the point but it got locked by an unsympathetic moderator.