I tried everything including running MCR.exe multiple times, the scaling approach of changing high dpi optimizations...everything. MacAfee remained.
I couldn't resize the uninstaller window at all - the only option was to close it. And it ran everytime I tried to uninstall using either the uninstall app or the uninstall option in App settings.
Finally I accidentally hit the "Tab" key when the uninstall window was open and the dialog box shifted enough that I was able to see and click the "uninstall" button.
Finally gone.