I've been directly involved with 3 Philmont crews. In all those 3 crews, we've used 4 man 10x10 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.