I use to have tell callers to uninstall Norton you have to go to their website and find their separate uninstaller software as the the one that should have worked in windows did not remove all the bits. I tried it a few years ago and it bluescreened my Windows 7 pc. I now use Webroot.
I have had few issues with Norton in the last five or six years. Yes, it’s footprint is a little heavy but neither of my two PC’s have suffered with it.