Not every 1106 motor (with identical KV specs) is the same. I have read that e.g. the BH 1106s are getting a lot hotter than the cheap 1106s I'm using. That being said, the FT guys did strap a waaay too heavy lipo onto their test machine -> much higher load on the motors.
I never said that you can run these motors on full load for an infinite amount of time. It just happens that the combination I tried works for me (rather lightweight build, custom 4s lipo, small 2" prop).
Additionally, 1102s on 3S isn't too great with slightly raised ambient temperatures (the interesting part of that experiment was more that we both did try that with 1-2S ESCs which survived that procedure pretty well).
Rule of thumb: "1S more is usually okay [for motors, possibly not electronics] but can kill equipment".
Unfortunately, I'm planning exactly nothing with these motors, 12.99 USD is much more than I want to spent per motor. Given that the machines with these motors fly way faster than your usual brushless micro, I try to avoid super expensive motors. I have enough motors to build something fancy already (among other things RS1103 7800KV, which really look interesting on paper).