No, but we are dealing with testimony from witnesses who discussed their story with one another, potentially many times, before we ever heard of it. We have no video of that incident, no contemporaneous notes or records (to my knowledge at least). The liklihood of stories converging and coming to agreement (and thus becoming less accurate) thus seems high. And at the end of the day it's just more eyewitness stories. Even the best trained observer can make mistakes or misremember what happened.
In other cases, where we have videos to analyze, it turns out that the claims made of things like extreme speeds (GoFast), sudden accelerations (Flir1 aka Nimitz) and weird rotating flight (Gimbal) are not supported by the evidence.
Everybody, of course, can decide what evidence rises to the level that they find convincing, but I think it is significant that the extreme flight characteristics and physics-defying aspects seem to cluster heavily in the cases where there is no video, and to be absent in cases where such data is available and subject for analysis.