Either trueNAS or unraid work as a vm in Proxmox, but there’s some caveats. You have to pass the whole hba/lsi pcie device to the vm so you can’t split the backplane of the server.

Those don’t seal well, so probably not

Aircraft maintenance has been doing the negative pressure unlock tests on cockpit doors for decades, its honestly surprising what isn’t common knowledge. Like others have said, rapid decompression of only a portion of the aircraft is very bad, and will result in massive structural failure as individual compartments aren’t pressure rated and will blow apart. The doors I’ve had experience with had large panels that would pop out when in a negative pressure event.

Honestly, the second half of this post is not a very true statement, and is pretty disingenuous to reality. The Bambu ecosystem can operate independently of Bambu labs if you want/need to, there are plenty of knock off replacement parts to keep it running long term, you can buy all the consumables from amazon/aliexpress and many of the other components. The slicer has a feature rich open source alternative too, so software isn’t an issue. The only thing it has against it is its not open source. I own both a prusa and now 2 Bambu printers. I spent a long time researching what I was going to purchase to upgrade my prusa printers. The mk3.9 upgrade for my mk3s+ was almost the cost of a whole new printer, and new units were more expensive than the p1s. The p1p/s has more build volume, is faster, and has been more reliable and in general usable than my prusa ever was. I want to support prusa but they have fallen way behind in nearly every way. If you don’t want your data collected and you desire privacy you can have that with a closed source product, it’s not impossible. And you can get a better machine at 2/3 the cost of a prusa or a multi material one at the same cost.