The problem with this assessment is it puts undue burden on the buyer to know what can be upgraded. Intel implied directly with words "upgradeable" and didn't specify. This is not how it works, you cannot cover yourself just through vague language. It's like buying a car that says "uses gas" but come to find out it cannot handle gas diluted with Methanol; its unreasonable. The amazing part is, with the R2, they pulled the same stunt twice.... I have an R1, the lack of GPU upgrades is just laziness on their part, they even deliberately redesigned the motherboard to keep R1 owners from getting new GPUs produced later. You can't even get the parts unless used from Dell, and then you pay exorbitant rates. It's just a bait and switch, you can't defend the practice.
What most here don't know is there are no MXM cards now; Dell had to use DGFF, their own format. They had so many issues with burning up R1's, they basically yanked the parts for repairs. Thus any supply of video cards instantly became listed as "used" - they wanted to charge me literally 2K USD to upgrade from a 2070 to a 2080 card.... and told me it was used with a 30-day warranty. Total BS. The other untold story here is how they gimped the machine severly to stop the burn-ups through a series of BIOS updates that did nothing but continually reduce performance down. Class action is more than warranted.
It's worth noting even this "Z390 chipset" was false, because they then turned around and refused to support the 9900KS chips.... see? No one is mad they didn't do upgrades for motherboards/CPUs (well except for the welch on 9900KS), its the GPU they didn't even try to do for R1 or R2... now they have them in their "X" series? WTF Dell...