There is plenty of evidence out there to suggest that some of the bikers went there to cause trouble and did. So I would say it's an incorrect assertion. I would not cal lit an absurd lie, it doesn't get to that level, so much of the evidence is he said she said that there is still room for speculation. It maybe more a style thing...
In the real world, when someone knowingly makes a clearly false statement in an effort to deceive, that is a LIE, not some “style thing”. The LIE stating ALL WERE INNOCENT brought the lie to the level of absurd.
I can understand loyalty, but criminals, like those that perpetrated the trouble at Twin Peaks and which routinely commit many other crimes, are not deserving of loyalty from persons claiming to be law abiding Constitutional honoring citizens.