The upside and simultaneous downside of social media is that everyone has access to it.
That means that people with something of wit and relevance gets the same space as someone nasty and poisonous, and that makes it the most even-handed avenue of expression that we have, and more power to it.
Like most aspects of culture, a degree of filtering is required - a basic ability to simply skate over the garbage that is not worth the time it takes to read it, and a willingness to seek and find the good stuff that enhances the world a little with information, humour, and enlightenment.
High profile incidents like Mr Fry having his humour misunderstood is an occupational hazard of the medium - probably more worth skating over than dealing with in depth.
From what I understand, Mr Fry made a joke about a friend who understood and accepted his absence of malice - Mr Fry is many things, but cruel does not seem to be one of them.
The social media fascists have decided to be offended on the lady's behalf, which says far more about them than her, or indeed Mr Fry.
It will all blow over, these things always do.