My buying the game does not invalidate my opinion on the distribution. It sucks, plain and simple. There is no reason to short change customers and to not at the very least make the extra cards available in some way.
I've played card games for many years including against world champions and people far better than I. I know how these games work and I can tell you that if you want it to succeed there will need to be the kind of interest in the game that informs people wanting 3x every card. Not providing that is short changing the player. All this means is there will be people that will happily buy 3x core sets just for 20 extra cards. That is not a good thing for the community at all; you talk about the core set designed to provide an 'in' for new players, but if people buy 2 or more copies of that set you then have a small 'elite' hoarding copies of the game that would and should otherwise have gone to expanding the playerbase. I've seen this happen before; the people i used to play with would ruotinely buy 4 or more boxes of every expansion as soon as possible. They would hoard cards for theior collection and not trade (as you might with the core set, though frankly that's not a good way either to encourage new players - they might miss out on the faction they'd be best suited to in order to trade for something else).