Beano is a comic. Of course virgins will very likely get mated at this time of the year - most unknown supercedures go through with no problem at all at this time of the year. Just needs a couple of warm days for mating.
Mid-September is renowned for fair weather - there may be some poor autumns, but remember, the oceans have been warmed during the summer, so temperatures are likely better in the autumn, than spring (where winds tend to be cooler)
Additionally, with supercedure the old queen might remain all winter, so is not discarded (by the workers) until the new queen is, at least, a proven egg-layer. That is what supercedure is all about - a seamless progression from one queen to the next generation. Bees are more clever than the average beekeeper - they would not retain an infertile queen and initiate the certain death knell for the colony! You may have!
A beginner needs to know that all larvae, after pupation, do not hatch - they emerge. Eggs hatch. There are a lot of non-beginner beekeepers that don’t seem to know that - you see them all the while - writing ‘hatch’ instead of using the proper term. Not very clever, if they are expecting to actually educate the beginners, is it?
My advice is always to think carefully before breaking down all queen cells. It is usually the wrong thing to do. Better to ask on here first if you are not sure. But do be selective of those you take advice from and think through all the possible outcomes before acting. There are a lot of unthinking beekeepers giving advice on the forum.
That means those that have congratulated you on removing the queen cell are quite possibly encouraging poor beekeeping. The information you might glean from the forum may be worth exactly what you paid for it - nothing!
The bees may well try again, to supercede, this time later than the one you pulled down! If there is doubt about the fecundity of the queen (bees often know better than the beekeeper) and they do not manage to supercede, you may find a drone layer in there in the spring.
RAB