Not exactly. I assume you're familiar with the fable of
The Boy Who Cried Wolf. That's why Republicans are frustrated. They have no credibility outside the nutter bubble. They've spent the last seven years scurrilously attacking anyone and everyone associated with the Obama administration. In most cases, these attacks have been based on lies. Even when there was some kernel of truth within an attack it was buried under the lies intended to turn a small problem into a MAJOR SCANDAL!!!
Even when such lies have been soundly refuted, the GOP faithful continue to parrot them (e.g., Obama's a Muslim, Obama was born in Kenya, etc.) They love their lies. There's a whole industry built around deliberately lying to the GOP faithful. Just like a battered wife, the faithful keep coming back for more, no matter how blatant the lies. The result? Those outside the nutter bubble see the GOP faithful as ignorant rubes, stupid, simple people who can't tell truth from fiction. They therefore have no credibility. Their accusations against Clinton are presumed to be just more of the same raging BS they've been pushing for years.
In short, the GOP are the boys who cry wolf. Even if they happen to tell the truth, they are assumed to be lying yet again.