Borrowing them ready made..i think it omit the word opininon?and the sentence parentheses confuse me
Because many religious people are uninformed, may lack the intelligence to understand atheists are not “out to get them”, they lack adaptability and they lack the ability of thinking for one's self or forming one's own opinions, instead of borrowing them ready-made from other theists, or because they merely follow prevalent fashions of thought & judgment.
This study may help you understand things better:
“Several researchers have examined the relations in terms of magnitude, distress, and the degree to which people anticipate being stigmatized. Higher anticipated stigma and magnitude have been associated with higher psychological and physical distress. But, most atheists(, tend to measure psychological and physical well-being rather than distress unless they have to hide their disbelief), as they have to do, in some countries, some places and with some people.