It also makes it sounds like the defect is nobodies fault, as if it came from some external source, like sun spots or something. The description of the early healthcare.gov as "glitchy" angered me.

You glitch a radio by running a microwave oven next to it. The radio's failure to work correctly is not the radio designer's fault.

I similarly don't like the word "bug". Bug implies it wasn't always there, that it just got in somehow, snuck in through the cracks.

I try to always use the word defect.