Not you necessarily, but I always think people who downplay this do so because they can't possibly believe anyone in Japan learned anything from a promotion that had Jerry Lawler as the top star.
Also, the non-martial artist main events early on (like the tag with Murdoch and LeDuc, and while I've never seen it, that pimped 1990 tag with Sakurada has always been described as a Memphis-style arena brawl) are pretty clearly influenced by the Memphis brawling style. As late as 1992 the FMW parts of the Los Angeles trios match are pretty Memphis-y.