Interference patterns from two lasers do not make any sound. You can take data describing the interference pattern and convert it to a signal that is run through a speaker but that doesn't mean the interference pattern is audible.

The amazing thing is they detected gravitational waves, not that they hooked up a speaker to the data.

I think a proper analogy would be if back when someone created the first function generator they connected it to a speaker. Then in an interview the main message they delivered was that you could now "hear electricity."

It just seems like they are focusing on an afterthought.

I also have no idea why I am so fixated on this. :-p