“...the secrets he passed to Israel were not that critical”
How do you know that? Unless you know the type and extent of sensitive information that he revealed how can you substantiate that statement?
From the Jewish Journal:
But all of this was dwarfed, according to a principal author of the Weinberger Declaration, by photocopying for Israel the massive 10-volume RASIN Manual. An acronym for Radio and Signal Intelligence [RASIN], the precious manual is known as "the Bible," according to the intelligence officer. The RASIN Manual details America's global listening profile, frequency-by-frequency, source-by-source, geographic slice by geographic slice. RASIN was, in effect, a complete roadmap to American signal intelligence. Informed sources say Pollard's RASIN Manual disclosure was the crux of a secret exchange in Judge Robinson's courtroom just moments before the outraged judge finally pronounced a life sentence. Some estimate the loss of the RASIN manual cost America billions of dollars and many years in completely restructuring America's worldwide eavesdropping operation. Though Pollard has sought to downplay the consequences to the U.S. of his actions, his crime was lasting and devastating to the U.S. intelligence community.