Simply saying "don't worry, be happy" go make movies isn't really an appropriate or responsible solution - the true meaning should be clarified.
Not fixing damage for free under warranty, that is caused by misuse or through other faulty equipment causing the problem is one thing and completely understandable, but legally speaking "voiding the warranty" would mean your warranty is terminated - i.e. you no longer have any warranty on any part - and I don't think anyone wants to test that in court so it would be nice to have a clearer statement of warranty policy that we can count on, not one that basically denies use of everything in the broadest possible terms so that it could only be sorted out by the lawyers (where usually the deepest pockets win), and as I said, I don't think any of us users want to go there, anyway.
It doesn't seem that out of hand denial of other configurations should be necessary and I don't think that is (or at least shouldn't be) the norm in an industry where so many different styles and evironments are encountered everyday that require creative solutions to achieve the artistic intent.
This is an industry where mounting cameras on jibs, cranes, helicopters, underwater housings, cars, beamsplitter 3D rigs, etc. is an everyday occurrence and often requires mounts or power supplies or cables or whatever to get the job done that aren't supplied by the manufacturer.