I totally get what your saying about it being link baitish. However,if the manic compression in my voice could be caught by my phone before I make an urgent call, it would be most advantageous, as opposed to a microphone on my computer.

It's not even linkbait because it's overly connected to cell phones.

It's linkbait b/c it's not as certain as the title says.

TFA says, emphasis mine:

features like pitch, loudness, and tempo that may predict a mood swing in the near future, before any recognizable change in mood emerges. For example, a single feature, like loudness, may flag a person on the path to mania or depression once it crosses some threshold. Or telltale signs could come from a combination of these features, or the way they change over a few days. The project was funded in 2013 by the National Institute of Mental Health, so it’s still in its early days. Though they don’t yet know what will make the best predictors,

Agreed, but it also narrows down on certain things. For e.g. it could mean that the computing power required is small, and that you don't need an expensive microphone that captures a wide frequency range.

you have to remember that the only microphones people have any exposure to in regular life is their phone. So it makes sense that any technology that uses a microphone be found in that device.