It is probably very satisfying being on the mirror assembly line at BRP.
Click, click, click and there, the mirror is quickly assembled.
For the owner, though, pulling them apart again is sort of counter-intuitive in the way you have to poke around blind with a screwdriver and prise the thing apart like a stubborn shellfish. Breaking off those unforgiving tabs is way too easy. You will never be ready for that to happen but chances are it will. I speak from experience, of course.
Opening them up can be achieved if you have a lot of time on your hands and you are overloaded with the patience of the Man in the Moon but in my view it would have made a much easier and quicker job to have had some neat little screws to undo instead of fiddling about with those pesky break-off tabs.
Just saying...