Popularity of and frequency of repetition of an opinion have little bearing on the accuracy of that opinion…
Ever wonder why there is no reference to garage door operators in the residential model building codes, other than the UL 325 requirement? Or why every garage door operator installation standard, even down to the wording, size, placement and diagrams included on the the safety labels is the same?
It’s because in the US the standards have been enumerated in great detail in U.S. Federal Law since 1993 (part of the great elastic, ever expanding and most frequently abused “commerce clause”). Specifically they are enumerated in Title 16 - Commercial Practices; Chapter II - CONSUMER PRODUCT SAFETY COMMISSION; Subchapter B - CONSUMER PRODUCT SAFETY ACT REGULATIONS; Part 1211 - SAFETY STANDARD FOR AUTOMATIC RESIDENTIAL GARAGE DOOR OPERATORS
Curiously, this is the same law that was used to ban “lawn darts” for those of us old enough to remember them.
BTW: The federal law, every manufacturer, the UL 325 specification and DASMA all specify the block test. If a door fails when performing the block test, I have no problem explaining how I came up with the procedure (it’s plainly printed on the safety label, in the Federal law, the manufacturer’s documentation, the manufacturer’s association documentation and the applicable UL standard). Break a door or worse, fail to detect a defective installation using a hand test and what will you refer to as the reference standard that you applied?