At least, relatively speaking, this is peanuts. I mean, really think about what's being collected: <To help build a more personal Twitter experience for you, we are collecting and occasionally updating the list of apps installed on your mobile device>. That's it.
Now, think about the data Facebook has on you. Right. This is a joke in comparison to the wealth of data Facebook has on you. If you're going to express outrage over this, at least dish it out in appropriate amounts to appropriate parties.