It may not be defined as trolling, but I have noticed that there is much more rudeness, unkindness and foul language on MN baby name discussions compared with similar forums in other parts of the world.
eg on other forums posters generally use phrases such as 'it's not my style' or 'I'm not a fan of' or 'I'm not keen on' about names they don't like, or even 'sorry, I dislike ...' rather than rude put downs. On other forums I think that some of the more extreme rudeness would be deleted by moderators whereas this one seems to allow a lot. Not everyone, and not even the majority, but MN definitely has its own tone - as does each forum round the world - and it's not always a pleasant one. MN is also more class conscious - which reflects the UK I guess - than other places. And as pps have said, there's a lot of ignorance about names that are just a little different to some people's very limited experience.
Thankfully most people are kind and helpful, and open rather than dismissive if they don't know something.