I fault Apple for being too heavy-handed with making HEIC the default photo file format when even in recent versions of MacOS like Sierra, the Finder app doesn'

I fault Apple for being too heavy-handed with making HEIC the default photo file format when even in recent versions of MacOS like Sierra, the Finder app doesn't know what the heck a HEIC file is! Apple hasn't released an update patch to fix either, unless you consider upgrading MacOS to Mojave an update patch!