I have to disagree with you there, friend. I have the screenshots above, and nowhere in OM can I find a specific "This is why you have a warning" statement. It can be assumed by comparing drives lacking non-critical errors, but that's not an excellent approach when you're talking about your storage. I don't want to assume, I want to be assured.
I don't believe that vendors like Intel are literal weeks behind Dell on firmware releases. In my experience, Dell is consistently behind in driver and firmware updates. And their usurpation of the update tree often causes issues. For instance, I wanted to load a client's engineering system that came with a Quadro card with the latest Nvidia driver. Nope, 'you have to go to Dell for your driver' page. When I did, the latest version was the one installed, from 2 years ago. What the heck, Dell?! That’s an expensive card, and I want it to support CAD 2016 with some of the newer features! If they had left it alone, I could get the drivers straight from Nvidia and this would be a non-issue.
Additional to that is the fact that I do system updates quarterly to servers anyway. Drivers, firmwares and BIOS don't usually see frequent updates so it makes sense to me to have a cycle that is not taxing but also doesn't adopt additional risk. Once every 3 months seems to be a good place to have landed for me and my clients where I'm not fussing with the servers and downtime every month just to do non-critical updates as soon as they are released while not leaving firmware in place that has known issues for an excessive amount of time. Even if Dell were 2 weeks earlier to the table with a firmware, it really wouldn't make that much of a difference to me.
Further, I think that Dell has to wait for the official driver/firmware release to occur before adding their tweeks to it and re-releasing it as the "Dell" version. I can't imagine Dell would replace the R&D branch that Intel already employs to make these changes in favor of their own team. That would be insane.
Finally, it's in Dell best interest to have a list of supported devices. The drives in this system are literally identical to the "Dell" drives save for the firmware. This provides choice to the consumer. The problem would be that Dell has to prove a value to their drives over the direct manufacturers' drive. On top of that, it doesn't seem outrageous to me, that given the limited "approved" devices list, that OM would be able to watch for the same things it watches the Dell drives for. If you have 5 Intel SSDs that are on the approved list, and you can tell all the same info from them as the Dell drives, why produce a warning if the drives are fine? Dell ought to support drives that are considered approved, if they weren't going to, what's the point of an approved list to begin with?
I'm really only disagreeing to express my frustration with Dell and to more clearly convey my opinion on the matter; I really don't expect to change your mind or see Dell make any policy changes. I just don't see the "risk" you mention of running non-Dell drives, and think it's in the best interest of the consumer and Dell to fully support "supported" devices on a system. Maybe if OM notified you once upon detecting a "non-Dell" drive and let you dismiss it without a persistent non-critical warning, that would be a good compromise.