The wording may be a bit loaded but the point remains - however polite and inoffensive some think we should all be.

My point wasn't not so much about being polite & inoffensive for its own sake, as about the best way to get a useful discussion going. "Is rubbish playing crap?" isn't a question at all - at least, it's not a question for anyone who might disagree with you. Characterising the style of fingerpicking you want to talk about in these judgmental terms ("prissy", "nice but boring", "pretty but twee") tells us there's something you don't like, but it doesn't tell us much about what that is. There's been a huge amount of confusion on the thread about what 'prissy fingerpicking' actually is - I'm still not entirely sure. Plus it risks starting a fight with anyone who thinks 'prissy' fingerpicking is perfectly OK and doesn't like hearing it slated.

It's all about what you're trying to do. If you're trying to get people to share their opinions without getting their backs up, then "polite and inoffensive" might be the way to go. If you're trying to get people riled, don't change a thing.