I'm hoping that this isn't reflective of the whole population on mumsnet and that there are others like me who are too scared by the negativity and strength of opinion to contribute
It's not reflective, which you see more when the discussion comes through occasionally onto AIBU, even though if you just frequented the FWR board it'd seem like it was reflective of all. It's really not.
and that there are others like me who are too scared by the negativity and strength of opinion to contribute
There are - it's not just you