Obviously.
Is hating Nickelback one of those situations?
> And even when the harshness doesn't come from the best place, we still need it to some extent or we become fragile and blind to our own flaws.
That's a fairly nuance-less view of kindness. Criticism, in the right context, is kind--it's not kindness to let problems stagnate when they can be fixed. For example, that is why I decided to criticize the author of this blog post.
But hating Nickelback, especially when it's just dogpiling onto a frankly boring meme, isn't trying to fix any flaw or problem. It's just being a dick in a way that it's popular to be a dick, because you can't be arsed to think for yourself about your own actions.