Because one side is pushing a lie, and on top of that, both sides seem to be very concerned about truth. If the truth is being pressed, fine. But both sides are being pressed, one by the world at large (which doesn't necessarily mean it's true), and one by the face of "the largest Traditional Catholic forum", which is a sort of support line for Traditional Catholics being tossed about by the chaos of modern events, who are on high alert looking for crazy people to avoid, and sanity to latch on to. I'm not convinced FE is a solid enough theory to publicly declare as a certainty or even just more likely than GE. I'd like to talk in person to a FE some day to try to understand how each of us can be so confident in opposing beliefs. I want to understand the logic behind it, and where the error in either or both parties lies.
In theory I agree, but the reality is that this issue has caused people on both sides on CI to descend into unnecessary personal ad hominum attacks. I'm not claiming any sort of victim status but just examine the record. Some of the attacks are really nuts and even vile detractions/slanders. Not exactly the kind of example, a traditional Catholic forum should be providing to the public.
As an aside, it would be interesting if it could somehow be determined how many folks on this forum after all the time it's been going have actually switched from FE to GE or visa versa. Not a whole lot I bet -- even if they were to admit it -- if even any and for every switch to one side there may well have been a switch to the other side. Who knows?!