It is certainly NOT endorsed by Canon so I'd take your advice with a pinch of salt.
True, but sometimes Canon's guidance needs a pinch of salt, too. The manual for my 600 II instructs me to send the lens to Canon to replace the tripod foot with the monopod foot. Apparently, a hex key and four screws are too complex for us normal folks to handle.
True, some of the Canon's guidance is mundane to downright rubbish. Can't blame them though - some people are incredibly stupid and won't do even the basics right and will blame Canon for anything and everything that goes wrong with their equipment.
1DX, 5D3, 600D, RX100
16-35L, 24-70L II, 70-200L II, 100-400L II, 50L, 85L II, 135L, 17TSE, 24TSE, 40, 100 macro, 18-55 II, 55-250 II, 1.4x III, 2x III, 600RT x 4
When it comes to gear, it is better to vote with your wallet. Bitching on online forums like a lunatic doesn't get you anywhere!