There are long stretches of core without support, they laid hard wire in those sections when they had the patterns 1/2 full(approx) so they wouldn't drop out or collapse, it is annoying to see them in there. Mass production, water navigates around it fine, they don't care. I've always wondered if some caused mystery noises at certain rpms, just ending up in the wrong shape/position, coolant flow causing them to "flutter" against the water jacket.
