This information applies to all versions
Yes. Earlier versions of DxO ViewPoint can be uninstalled once the installation of a newer version of DxO ViewPoint has been completed.
Windows:
To uninstall a previous version of DxO ViewPoint, go to “Apps & features” and select the version you want to remove, then select “Uninstall”.
macOS:
To uninstall a previous version of DxO ViewPoint, go to your “Applications” folder, select the icon of the program you’d like to uninstall, and drag it to the trash.