RMS has stated on many occasions, including in his writing, that he believes proprietary software is immoral. He's been almost explicit about the immorality of licenses he disagrees with, such as the BSD license. So yes, RMS wants everyone to buy into his philosophy, to the point of labelling everyone who doesn't as a bad person doing bad things.
I know he has said that proprietary software is immoral, but I don't ever recall him say it about the BSD licenses (and would be very surprissed if he did). In fact, I'm almost certain the fsf website lists that as a "good" free license (the modern versions of it, the older ones had some ambiguity and even BSD folks don't use those any more).