True, and maybe the PSIO will turn out to be fantastic, but the reason we all want Everdrives (as opposed to similar devices that aren't made by Krikzz) is because with Krikzz you know you'll be getting quality - a well designed, efficient piece of hardware with easy to use software, and after sales service and possible software updates.
Many backup devices turn out to be lacking in compatibility, or features, or reliability, and with little if any after sales service and later additions to the software. Sad but true. But hopefully the PSIO will be as good as the PSX deserves, and we'll be able to play all our favourite PSX games without hassle.