What they should be concluding is all of this hardware is first generation and will have noticeable issues at times, from minor to major. My Vive has random controller tracking problems sometimes, and after the latest firmware update I started to get the world tilting effect as well and it was immediately discomforting.
To go around comparing videos and trying to prove who's right and who's not set up correctly is a fools errand, all of this stuff is YMMV and you should be prepared for wonky experiences at times going in despite the high price of entry. It just comes with the territory of being an early adopter.