Just because a business is taking in a crapload of money doesn't mean that it's profitable.  We have no idea what financial obligations BFL has, so you can't assume that they're making a ton of money based on the amount they've collected for pre-orders.  Most new businesses don't become profitable for a number of years.

The non-disclosure about Sonny's past wasn't an oversight.  BFL knew damned well that people would be less likely to place pre-orders with the company if they knew of Sonny's past transgressions.  So the question of whether there's anything else they're hiding now arises and it's a legitimate one.

Maybe they're legitimate and maybe they're not, but the onus is now firmly on them to provide proof of their legitimacy and especially to back up their previous statement that pre-orders are not being used to fund ASIC development.  If there's any way in which BFL customers have been misled (and it appears that they have been regarding quality control), now is the time to come clean.  People will forgive any past deceptions if the whole truth is revealed now and BFL delivers their product up to standard and on time.  They'll be far less forgiving if the product doesn't live up to expectations and it's later revealed that the company's responses to user questions were either misleading or outright untrue.