I’m curious how you came to this conclusion? I would think that if the filter works for proofgrade acrylic, maple & oak, it should work equally well for non-proofgrade acrylic, maple and oak.
I would be a bit more concerned with filtering for a material listed as “unsafe” in various other places online (like some of the links in this thread) or material that has no proofgrade equivalent (since that could (but not necessarily) mean there was a safety reason not to supply said material).
Granted, if I had a good way to vent to the outside and didn’t plan on ever taking the glowforge to any locations where external venting would be a problem, I’d have canceled my filter by now.