Ah. You bring up an interesting thing to consider, because honestly, you really just don't know until you measure the skis themselves.
I have heard the same thing about armada. I can tell you from personally using them the skibuilders edges are 2mm wide, 1.3mm thick. And 1.3 isn't that thin.
A lot of companies out there talk about 2.5mm edges, 2.2mm edges, etc. etc. And I think some are actually referring to thicker edges & matching base material. pretty sure Line is on of the companies that does this, based upon the fact that they say they have double thick base material.
But other companies may just be saying it to sound good when in fact the edges really are not that big.
It is a tough one for sure and really the best way to find out would be to measure a lot of skis.
Second, regarding what crown makes, what you need to remember is right now, the majority of skis being made are rental skis and normal consumer skis, not freeride or park skis.
And the larger companies are making these skis by the thousands. I have heard numbers of upwards of 70,000 skis a year by rossignol alone. And how many do you think are freeride skis? Not a ton. Even if they were producing 10,000 freeride skis a year, that leave 60,000 a year that are just going to rental shops or normal "skiers." And for those normal skis, they use the thinner base because it is all they need.
A company like Armada who makes, what, 2500 pairs a year? Maybe. They just do not compare with the demand from larger companies asking for 20 times that volume in base material.
So that is why the normal, stock thickness is 1.3mm. From handling it, it seems like it would be ok.
If I could even get my hands on 2mm stuff I would be super stoked.
I was a bit confused talking with Crown because the guy even told me he didn't know anyone the requested 4001 base material over 2mm thickness, while several companies seem to suggest they do use it. So I dunno. Maybe they get it from someone else.
Hopefully that makes sense.