With hindsight now that I have published some of this material, is that not Stanton Friedman, incontrovertibly, documented here, taking a sceptical stance re Lazar, whilst manifestly advocating this as his 'scientific' evaluation?
"I have often commented that I am certain there are underground bases and that I wouldn't argue that there were saucers there'.
From the bits I have read, SF seems to be saying that that is his opinion but I don't think he's claiming it to be a scientific truth; just an opinion.
Conversely, he has a poor opinion of BL and seems to have access to more material, although the letters/documentation need more through analysis to see what is (a) stated opinion without reference to evidence, (b) opinion with reference to evidence (not visible to us) and (c) opinion with reference to evidence (visible to us).
It would be handy to index and cross reference all the docs you have on this subject.