All the testing, as well as my own experiences show the opposite to be true. A big reason the military chose semi-autos is because they function more reliably when filthy or abused. The cylinder, all chambers, the ejector, trigger and hammer are all exposed on a revolver creating many places for foreign objects to mess things up. Or for them to be broken or damaged if dropped. On a striker fired semi the trigger is the only moving external part. And if a semi does go down it can be disassembled, the problem corrected and back working within minutes, even seconds. A revolver will require a trip to the workbench to get it working again.
Revolvers have their place, and if kept reasonably clean are about as reliable as possible. At least for the 1st cylinder. Your points about ease of use by those less familiar with firearms it spot on.
It is quite important to me not to spread misinformation, especially in a more formal setting than a forum, so I take this criticism seriously. However I would like to offer a counterpoint.
My remarks were not about the revolver being abused; in that respect they may be better or worse. And certainly a problem requires a gunsmith whereas a semi-auto may not, but I didn't really touch on that.
As for the dirt/lint/gunk etc, in my experience and many others' the opposite is true. I have had very reliable striker guns go down due to a tiny amount of dirt in the striker channel, and we've all seen guns jam due to dirty feed ramps or internals. I have never seen or heard of a revolver fail due to being dirty. At the worst, they require a great deal of force to use, for example if dirt is under the ejector star, but they can be "manhandled" and gotten back into action. I was speaking to an internal hammer model, but I believe an external hammer should be about the same.
I'm curious of your experiences in which revolvers failed from being dirty where a semi-auto would have succeeded.
I think in all reality, neither design would fail in any reasonable real world use, but if you really push them I think the revolver would last longer.