It's more ubiquitous than Facebook among people that matter in public discourse.

Basically anyone with a professional presence that involves talking to the public, publishing papers, blogs, open source projects, etc still uses Twitter to talk to the public. Lot of these people have a hidden or deactivated Facebook, but public Twitter.

This is what I call a failure to measure, or what smart people call bias. To ascend your opinion from silly to valid you only have to qualify two things:

How much more ubiquitous in this regard is Twitter than Facebook (as a percentage) and what real world impact does that number have?

People, in general, tend to invent their own reality. There are smart terms to describe that behavior from a variety of causes but dummies like me just tend to call it bullshit.