Why don't you provide a convincing comparison with uncompressed full size images?
I've tried flashing it but it did not work. The files were missing.
edit: After testing this apk https://www.apkmirror.com/apk/htc-co...63406-release/
It does not even come. Also the dev is banned from XDA, so I guess I should rather pass on the flashable zip after one failure.