Semivan has been very clear—he had no official role having to do with UFOs.
He is relating his personal experiences—nothing more, nothing less.
There are thousands more all over the world in all walks of life just like him.
Imho many of them are telling the truth as best they can.
Yes. We are left with taking their personal experieces at face value. That’s all we have. But, when - 99% of the time - there is no independent evidence for that same experience, we cannot just take things at facce value.