I’ve read some of them. No one is necessary lying, but most of the testimony is of the format “I think I saw somebody acting in a way that I felt was incompetent or malicious, even thought I was an outsider with little knowledge of the process” or “I witnessed abuse regarding over- or undercounting of votes” — claims which were later easily disproven by the hand counts.

I see no reason why all of them can’t be wrong (not necessarily intentionally lying).