The only Western attitude of disdain I see is when Westerners act like the Peruvian constitution doesn’t matter and that an incompetent loser should be their dictator.
But to you protesting is meaningless. You just ignore them.
Protesting in favor of a corrupt and incompetent wannabe putschist ist indeed meaningless.
One can only hope that people will learn their lesson someday – the more of an "outsider" your candidate is, the more of an irresponsible wacko he will turn out. This applies to both Western and non-Western nations.