You sound pretty convinced from your interview experience. In that case you should forget about all these online reviews be it on glassdoor or here and decide based on what you feel is best for you and what you know from your interview. not like another review here is going to be more "real" and have greater weight in changing your decision since they are all online anonymous reviews (negative or positive), yes? Anyway lots of people have shared their experience in this thread recently, so there's plenty of info for you to go through and decide if their experiences are valid.

if you want anything more substantial, you're going to have to ask friends in dsta or network with dsta staff on linkedin and hope they are willing to share.