Even Rutan ignored the AC quality thing on the first Vari-eze since
there wasn't ( and may still not be) anything such as AC certified foam.

The Rutans ignored a great deal of "proven" practice in their
homebuilt designs yet after they proved unable to make a direct drive
pusher VW work in the prototype VariEze (which others had, having less
theoretical knowledge but much more common sense than Burt and Dick)
decided only certified aircraft engines were any good. Then they freely
instructed builders to not only ignore but defy manufacturer's
instructions, such as not operating the O-200A as a pusher.

In other words they are talking out their mouth and ass
simultaneously. When one or the other Rutan does buy it, I won't cheer,
but I'm not going to get lachrymose either. Honebuilders don't have the
sense to figure out Rutan F'ed them and kicked them out before dawn
like an acne-ridden fat broad picked up at a bar.