The only reason I can think of, is people being unaware of ePub existence. I agree with you. If you want something that can be reflowed, get the ePub version.

The only reason I can think of, is people being unaware of ePub existence. I agree with you. If you want something that can be reflowed, get the ePub version. Or, if it's meant to be made from images, get the CBZ version.