If you’re waiting for a steam deck to be available i have good news. The problem was that they used all of the locktite in the world on one of the screws on my steamdeck which made changing the ssd a PITA on mine, i ended up destroying that screw. I’m sure they’ll get more locktite abd begin shipping to you soon. I use arch btw.
I also took my SSD out and replaced it without issue. Seems OP just got unlucky