Completely disagree. You don't get to choose how your "help" is received.
Exactly, this is why you should not lie, sugar-coat, or withhold feedback. Doing so is the epitome of rude condescension. Their reaction may be a problem, but it's their problem; don't steal it from them.
Context and respect matter. Obviously, walking up to a stranger and giving them un-asked-for potentially negative feedback is unbelievably rude, but when someone asks or context demands it, give them the respect that only honest clarity can give.
Yes, some people can and will use data to taunt and belittle others, but that is not a valid reason for withholding it from everyone. Keeping people in the dark is like only handing out participation rewards, which is disgusting behavior for anyone and everyone in any endeavor where performance matters.
How would THF and SWF get more hits?
They don't; that's a visual fallacy that someone might jump to if they don't know doubles & OH attacks are not included. Hence, why I think it important to put a footnote about OH & Doubles under the table.