"... anyone who tried to use the Pi for long-running reliable applications and failed has this knee-jerk reaction. ..." Curious, do you have any cites/examples

"... anyone who tried to use the Pi for long-running reliable applications and failed has this knee-jerk reaction. ..." Curious, do you have any cites/examples? I run my Pi's 24/7 and the system software is rock solid with uptime of weeks sans power outages. Applications I write might be another thing. When you mention applications is that "user created applications?" or a "hardware/software combination?"