And the Mac has cases like Zoom installing a back door web server so even when you deleted the app, it could reinstall itself.
Another case (not saying it’s nefarious it was obviously an unintentional screw up) was if you had System Integrity Protection turned off an installed Chrome, it would render your Mac unusable. (https://arstechnica.com/information-technology/2019/09/no-it...)
Even Apple is not immune from screwing up on the Mac. A certain version of iTunes deleted users files if the hard drive name had a space in it.
Another case (not saying it’s nefarious it was obviously an unintentional screw up) was if you had System Integrity Protection turned off an installed Chrome, it would render your Mac unusable. (https://arstechnica.com/information-technology/2019/09/no-it...)
Even Apple is not immune from screwing up on the Mac. A certain version of iTunes deleted users files if the hard drive name had a space in it.