[brazilianabroad]

> Yes well, it comes off as flaming,

Saying that someone who doesn't understand binary floating point numbers is ignorant and needs to study, while pointing them to a study resource, isn't flaming, it's an act of selflessness. It's a favor, a grant of knowledge and a nudge in the right direction.

> Even if someone is inexperienced, is telling them to study more and telling them that they are ignorant useful?

Yes

> Aside from the thing about tone, it is also a question of whether it is giving actual actionable advice.

The sibling comments did not exist when I posted my first one. It had also a link to actionable advice.

Mind you, no-one is forced to know how binary floating point operations work, as long as they don't intend on passing incorrect judgement that's brash and impolite.