The generic Intel driver provides users with the latest and greatest feature enhancements and bug fixes that computer manufacturers (OEMs) might not have customized yet. OEM drivers are handpicked and include customized features and solutions to platform-specific needs. Installing this Intel generic graphics driver will overwrite your handpicked OEM ...
That doesn't really make sense to me because Secure Boot and UEFI have nothing to do with GPU. All it would have to do with is verifying that the graphics driver is digitally signed and therefore "trusted".