Speaking only with regards to engineering marketing outcomes: allowing people to trivially conjure Bitcoins out of the ether early in the lifecycle, then making them increasingly dear, is a good way to engineer having a base of committed evangelists. It's kind of like genes, right? Genes don't have good features or bad features. Genes only spread. The gene for sickle cell anemia wasn't designed to kill people and doesn't care that it does: it just causes chemical reactions which have a tendency, on average, to create more copies of itself in an efficient fashion. The successful currency/social network/software/etc won't be the best currency/social network/software/etc judged by any standard of quality engineering, it will be the spreadiest currency/social network/software/etc.
I am being very value neutral in describing this feature of Bitcoin. This is about all I can say without being very unneutral in a fashion that would transgress HN's norms about politeness.