you don't punish people solely for lying to staff; you can however use their honesty or lack thereof as a factor in determining the severity of a punishment for a separate rulebreak, which is why it is often mentioned in reasons for punishments.

this isn't a rule and there's no conclusive evidence to prove a singular person's fault for the pasting of the dupe so no punishment should be handed out, irregardless of the level of honesty displayed by those involved.

you don't punish people solely for lying to staff; you can however use their honesty or lack thereof as a factor in determining the severity of a punishment for a separate rulebreak, which is why it is often mentioned in reasons for punishments. this isn't a rule and there's no conclusive evidence to prove a singular person's fault for the pasting of the dupe so no punishment should be handed out, irregardless of the level of honesty displayed by those involved.