Which is, I think, a mistake; by and large, the best of harsh feedback is more 'both' than 'either/or' - i.e. it might include a fair chunk of yelling but there

Which is, I think, a mistake; by and large, the best of harsh feedback is more 'both' than 'either/or' - i.e. it might include a fair chunk of yelling but there's also actionable criticism therein. Certainly if you look at Linus' rants the ranting is to emphasise the criticism, not to act as a substitute for insight.