did you see the picture that shows it laying down on the side?!
it's got a massive seat tube cut-out w/some reinforcing baffles. wild design.
UPD I've looked at the photos in the description and it's sadly a hard pass for me - the bottom bracket cut-out will be impossible to keep clean, let alone be stiff enough. I've never seen a fully cast road bike frame, so kudos to them for trying!