As much as I like rms, I find it very difficult to move past his comments on child pornography[1]. [1] https://stallman.org/notes/2011-mar-jun.html#4_June_2011_(Bo...
Since the sky is blue police has been using CP as an excuse to break encryption, search electronic devices, etc. RMS is not wrong.
OHO, I think RMS is making a point about the excuses governments and LEOs make in favor of censorship/anti-encryption - a good one, at that.
OTOH, he does a pretty piss-poor job describing it in that blurb. I'm not convinced this is an argument in favor of child pornography. I'm simply choosing to believe it's poor wording on RMS's part trying to make a point about encryption and he's not actually in favor of child pornography.