I also replaced the SSD in my 15" MacBook Pro 2014, and currently use a 4 TB M.2 drive.
When a replacement battery fried my logic board, I didn't lose my data. It didn't take multiple hours to re-clone from backup; I just used a screwdriver to move the SSD over to my spare laptop (13" Pro 2015).
A computer for me is primarily a data storage and retrieval device. Data loss is an existential risk to it. Data security doesn't bother me as much as it does other people; once the hardware is accessible, all bets are off anyway. I do get some strange behaviour with the new SSD (periodic weekly crash/reboot) but still accept that in order to have the larger capacity (4 TB is much more than the 512 GB when the laptop was new).
I also replaced the SSD in my 15" MacBook Pro 2014, and currently use a 4 TB M.2 drive.
When a replacement battery fried my logic board, I didn't lose my data. It didn't take multiple hours to re-clone from backup; I just used a screwdriver to move the SSD over to my spare laptop (13" Pro 2015).
A computer for me is primarily a data storage and retrieval device. Data loss is an existential risk to it. Data security doesn't bother me as much as it does other people; once the hardware is accessible, all bets are off anyway. I do get some strange behaviour with the new SSD (periodic weekly crash/reboot) but still accept that in order to have the larger capacity (4 TB is much more than the 512 GB when the laptop was new).