I've been directly involved with 3 Philmont crews. In all those 3 crews, we've used 4 man 10×10 Oware Pyramids. All treks have been in early August (monsoon season). All have stayed dry.
But some other crews using conventional tents had a few experiences getting wet from the rains … especially this past summer.
(BTW, Attending the advisors' coffee, can provide you with a wealth of stories & information … but that's another thread)
In each one of those cases, their advisors noted that in retrospect they didn't avoid one the 4 Ws (Water, Wind, Wildlife, Widow-makers) on picking a proper place to set up … their scouts knew how to set-up their tent, but was not enough, they were not practiced at picking a proper place to set it up at.
In the "worst" example that was shared, a crew arrived late into their camp site & a pair of scouts hurried up and set up their tent in what turned out to be a high drainage spot (while there was no erosion ruts to flag it, there were very obvious signs in the forest duff that showed that it was a drainage path … the scouts saw it, but it didn't register what they were seeing).
What happened? Their tent created a dam of sorts – restricting the drainage outflow, but had no effect on the inflow. During a overnight deluge, the water came in fast enough to crest over their bathtub floor … causing some middle of the night scrambling. They were lucky in that they didn't get really soaked, their tent being self-supporting was easier to move quickly & that they had synthetic gear … it all turned out just to be a bothersome learning experience … an experience they could laugh at later.
The point is this: We were at the same camp, sleeping with the aforementioned canopy tarps (pyramids) and we stayed perfectly dry during that same deluge.
How? we simply took enough time to practice & understand the 4Ws beforehand. The knowledge of how to use gear is not the same as knowledge of how to stay safe in the back country.
When I hear about shelters failing in protecting, sometimes it IS the shelter (wrong season use), but MOST times is a lack of knowledge & practice.
BTW: We didn't experience a lot of dust because we were at Philmont during the monsoon season, but being behind a wind break can help reduce wind blow dust (but, NOT eliminate it). But then, if a tent can truly seal out dust, that's a tent that has lousy ventilation.
YMMV