I don't think there is anything in it that would change a person's mind... believer or non-believer.
People who are convinced will see what they will consider incontrovertible evidence that UFO's, (Alien UFO's), exist.
People like me will see very dubious evidence.
Some of the people interviewed, and some of the evidence presented I found quite interesting, even extraordinary... and somewhat compelling. Other interviews, evidence, I found extremely weak and not at all convincing... almost laughably so (personal opinion).
Without question the most compelling interviews/evidence came from the military pilots.
Worth watching? I can't say... it was for me simply because the topic interests me... but well presented? Ehh, not really to me it wasn't. But again, others will, I'm sure, think it's excellent.