True, and it can easily be exposed and made airborne by by accident. For example, many HVAC professionals are unaware or unconcerned about the asbestos fiberboard panels that were often packaged around register boxes until the 70's. These boards are fragile and will readily shed fibers into the air.

Same goes for old ceiling panels, often loaded with friable asbestos. An act as simple as drilling a hole, or installing new can lights can load up the room with airborne fibers if done carelessly.

Which raises the following question: is it better to leave the potential source of problem around as long as it's not triggered, or is it better to temporarily activate it in order to remove it for good?

I have a suspicion that these people that "flip" houses diy style tend to disturb it without proper care. As a 17 year old I worked manual construction jobs (via craigslist) and even then knew enough to see proper precautions were not being taken. Oh well, they aren't the ones living in the house so I guess it all works out :-/

The key of the successful asbestos removal is to not make it airborne during the removal.