Ok. ‘Not the slightest difference’ might be overstated. But it’s a fraction of the impact of the manager’s public statements. There’s a reason all the best managers keep most things in-house and carefully choose their moments to criticise. All voices are not equal.
What we say makes not the slightest difference to morale or the harmonious atmosphere at the club. Everything a manager makes public has an effect - positive or negative - even if they’re saying the same thing.