they said that getting the GENUINE LAUNCHER MIGHT BRICK YOU CONSOLE IF IS CORRUPTED.
annoying to see how people get brainwashed to defend other people that dont even know about
The original gateway launcher has a sanity check which verifies Launcher.dat, if it has been corrupted or changed it will not pass the sanity check and fail safe stopping the boot process before any of the ARM9 code can be run.
Clone cards disabled this sanity check so they could run their modified GW Launchers, which is the reason clone cards can get bricked.
It has already been tested by multiple users that if you modify Launcher.dat by even just 1 byte the sanity check will fail and stop loading the launcher, you will be safely rebooted brick free.
TL;DR You have almost zero chance of getting bricked if you use Gateways official launcher.