I credit him for 'Bhagavad Gita As It Is', because it was like my introduction to Hinduism and gave me an appreciation for it. Although, I only read the verses and not the purports. From what I've heard about him is less than desirable. My opinion in a nutshell about him is this: He was not a perfected human being, but he also wasn't the worst.
Namaste , Really speaking , 'Bhagavad gita -as it is ' is a distorted version of real gita .Prabhupada called his gita 'as it is ' . But in reality , it is as per gaudiya vaishnawism . Under the name of sanatana dharma , he propagated false interpretations of geeta . He didn't ever mention ' gaudiya or bengal vaishnawa ' words in his gita .
In his gita , he has given many wrong translations and interpretations according to 'chaitanya charitamrita ' . In fact , this so called scripture has nothing to do with ' bhagavad gita ' .
Hari krishna