I got clarification on that from Rainie via a support ticket.
I’m interpreting that as they’ve had trouble with people breaking something, and they won’t warranty something you break if you try to disassemble it. So if you’re mechanically inclined and carefully disassemble, minding the internal cables and interference fit microswitches, it’s pretty straightforward. Check out the internal pictures from @sdj544 Excessive play in x-axis linear module bracket - #8 by sdj544