While I agree on certain aspects, think that self-image rights are not treated the same as physical objects property. The first analogy I can think of is an itunes song. You can use it, delete it, etc. but you can't legally post it for public download on a forum.
Of course, you don't sign a contract for each whatsapp conversation you have, but I'm pretty sure similar terms apply when related to personal pics. I don't know if "don't facilitate posting really personal and possibly harming pictures of someone without their consent" equals to "censorship". Maybe it's because I've worked in porn, so "revenge porn" is specially awful to me. We're living in a really hypocrit society where a woman can lose her reputation or her job just for being shown doing something that's not even illegal. I've met some really gifted models that suffered a lot of slut shaming from the same guys who pirated the porn she was doing. Some of them were threatened with losing their childrens custody (not a chance, in Spain, but it was a terrible fear for a mother). So, I'm terribly biased and I'm on Microsoft's side. I just can't believe I just said this.