Also, this feels like blogspam with a short summary and a link to the actual source. Original Verge article here.
It doesn’t directly, but some banking apps detect magisk in the app list, so even if you’ve added the apps to the exception list in magisk they’ll refuse to launch.
Installing the same apps in the work profile makes the magisk app inaccessible/invisible to them, which allows them to start up normally.
More secure: any bootloader tampering happening via physical access to the device will trip the warning.
More compatible: some apps (banks usually) flag an unlocked bootloader as a security threat.