I saw it more as “if you are insulted by this reasonable advice, then you are an immature idiot” rather than a more direct insult. Still passive-aggressive, but

I saw it more as “if you are insulted by this reasonable advice, then you are an immature idiot” rather than a more direct insult. Still passive-aggressive, but no insult intended if the reader isn't triggered. Source: I use similar phrases this way.