The quote's at -2. That could well be 2 downvotes total. You have at least 6 reasons here that believably could be why someone might have done that, and you still seem to balk. Is it really that confusing?

When I first saw the quote, I thought "meh". When I saw it again, a couple of the things I cited occurred to me. It's totally out-of-context, and I'm not sure what the intended interpretation is. I definitely wasn't thinking in terms of "censorship" or "blasphemy"; rather, I tried to imagine what the author might have thought scientists do all day that requires them to set books on fire.

There are very few things that I would count as logically necessary conditions for being a "scientist", and that particular action isn't one of them. Why do bibles have anything to do with scientists at all? Are you a religious nut or something?

Yes. Historically as well as in current culture, burning a book is THE signal that you wish for it to disappear, not just that you consider it wrong. It implies that you would do the same to all copies, not just one, and book-burners who had the power to do so almost always did. Ridiculously extensive Wikipedia article.