I agree with bitoffun fwiw.
No-one is going to read about mumsnet in the dm that doesn't already read about it on the internet.
Also - identifyability is surely a relative thing. If you don't want to be identified, why is that?
Lots of posters here has profiles with pictures of themselves and their children in them. So they are identified the instant someone clicks on their profile.
I am identifyable to anyone who knows me in rl. All they have to do is put the pieces of my posts together to know who I am - that's not hard. But the difference is that I don't want to be identifyable to someone who doesn't know me in rl, so I don't put pictures of me/my family online, I wouldn't give out my rl name/address on here, etc.
If you don't want to be identified by people in rl then perhaps you should be questioning why not.