Just not in a democracy with the full meaning of the term. In which politicians are not elected to make decisions for us, or because they can make better decisions than us. They're merely elected as delegates, to keep us informed, and act on our behalf.
It should not be their choice to act as if they "know better", and in actual democracies it couldn't be (they were taken out of duty and/or punished for such acts).
Besides, more often than not it's not about them "knowing better" but about giving in to this or that private interest of theirs, or lobby, or deep state, or military, or big donors, or under the table or "barely legal" deals ("Do this, and you'll come working for my company on a sinecure with good money after your term") and so on.
Which is why this 180-turn doesn't happen just on some newly emergent situations that the politician supossedly "has better information", but also for things the politician themselves and the party itself promised to do in its pre-election program.
It becomes disturbing to me when the authorities lie about something but everyone knows it, those authorities soon openly admit to lying, and people just accept it because of something akin to "they must know what they're doing".
Yes, I would rather that authorities lie and keep their trap shut about it. If we know that they are lying, and we just accept the "it's for our own good" reasoning every time, then we are at the stage where we're being primed to accept enough absurdities that we'll allow greater atrocities.