Trying to establish some "guilt by association", that if there was one fossil hoax, then they "all" must be hoaxes is not a good argument for religious people to make. Others could talk about Jim Jones, Catholic alter boys, and many other such scandals in religious circles to tarnish the image of any religious person.
Those who live in glass houses....
Non sequitur comparison. It's not guilt by association when those items were championed by mainstream macroevolution apologists for years as "scientific proof" of their theory.
To make the analogy work, you'd have to say "religious people are trying to prove the validity of their moral doctrine by using the deviance of Catholic pedaphiles." Which is of course not the case.