You are asking for 1TB of RAM. Keying it to M.2 wouldn't make it any cheaper or better than keying it to regular DDR5. I don't think that even just a tenth of that would physically fit onto an NVMe drive, even if someone wanted it to.
Put in that context, do you begin to see now why that isn't a thing that exists?
Isn't Argentina also being run by a sexist egotistical populist TV star who's destroying their government from the inside out? Out of the frying pan and into the fire...