Yep, another vote for bogus. Having owned 3 three Honda's over the years and currently servicing two, one an 01 Civic with ~145k, except for some dealer OC's early on all have used aftermarket filters with flat gaskets, with no issues.
Just finshed a 1 year OCI with a Pure One on a 3.0L Accord and replaced with same. The Civic currently has a Puro Classic after using an Advance Total Grip, all flat gasket. A little oil on the gasket to lubricate as standard practice, and you're good to go.
Some do prefer the P type gasket of Honda OE's (A-01,A-02) but that factor is not worth paying extra for or being a deciding factor, IMO.
So keep using the Wix/NG if you choose with confidence. And, grain of salt with that "guru's" future Honda recommendations.