Products like Blog Compass are not new. Google has probably had hundreds of these smaller, more experimental products that got canned after a while, like Sidewiki (remember that?) but until relatively recently it's never been used as a sign that Google is unreliable; in hindsight most of them made sense. If I had to guess, I think the continued soreness from a few big ones like G+ and Reader have just left many jaded.
I mean I was bitten by the G+ shutdown, but honestly, looking for things to complain about is really worse than just beating a dead horse. In other words, you may as well just complain about the one that really frustrates you, since I doubt anyone here actually used Blog Compass.
Disclosure, I am a Googler, had no idea what Blog Compass was until today.