I am not here to defend mint, never used it, but saying that a graphic driver can brick your system is spreading misinformation.
Bricking is very serious and means that your device becomes as useful as a brick. It can happen when damaging the hardware or firmware.
It seems you had a bad experience with graphic driver, this is 99% of the time the responsibility/fault of the GPU manufacturer (I guess Nvidia for you, AMD is not that friendly either). At worse you plug a bootable USB to recover your files and reinstall Linux.