I am a member of REPA and it has been made clear there that membership numbers there are overstated for various reasons (by a number I cannot recall, but it is around 40-50). That still indicates a membership of over 600. It also suggests that Ryanair-style manipulation of the facts is not normal on REPA, as you seem to suggest might be the case.
Hansol does this not actually imply that REPA is likely to be a more “reliable” source than Ryanair - for instance of pilot salary figures, of actual pilot treatment, of how agreements are really interpreted, how those paying for their type-rating are treated in practice (which is rapidly becoming the new "rip-off"), etc, etc. I think I know which one FR pilots trust and I think you might also know that too! Why would an employer go to so much trouble to infiltrate a website which it says it does not care about? Is it really because they are so concerned about their employees that they need a system of spies and anonymous sources?