I disagree with that. Updating Twitter feeds or posting online doesn't fix games. It has only been a few days since the last patch and they've instantly been hit with several more bugs across dozens of features/ aspects ofthe game. Right now they'll have a massive spreadsheet of bugs and issues all coloured in according to importance/effort to fix, and they'll be working out which patch to include a fix for each one in (if at all). If EA say they'll fix this one, and this one, and that one, etc etc, as they are reported in the forums, then within a couple of hours they will have committed to fixing hundreds of things with a handful of people, and within a month. Remember they said it takes two weeks to get past Sony/MS, so they need to decide what should be fixed immediately and what could wait to go in with a list of other small fixes.
Of course they could just say 'sod it' and not bother, but it has only been a couple of days since release so it seems a bit rash to assume that they aren't bothering with fixes just because they aren't responding to every post they receive.