I don't think many people really care about the space mission, they are afraid of Bioware will put more top tier items in cartel market only to force players to buy it to get the best gear. Glad from the reply it's not their intention.
Putting endgame game in the cash shop has been the definition of pay2win since it became a common phrase for MMOs, and that's what people are afraid of. The idea that this is 'just the start'. Even the dev post kind of insinuates that they don't plan to stop going in this direction; because they want it to be "equally viable" to in game methods.
For what it's worth though, EAware just saw the backlash it causes and if they have any sense it'll show them that it's not a worthwhile venture to put more endgame gear in the shop.