Early on in the war, Italy sent its soldiers equipped with uniforms and weapons designed for the Libyan desert to fight in the alps in winter. Many soldiers froze to death. A substantial proportion of the weapons like guns wouldn’t even work in the freezing weather. Generals sent tens of thousands of soldiers to die in hopeless attacks. After the war, Italy had profound social unrest and a deeply scarred country.

Switzerland, on the other hand, remained neutral, equipped its soldiers for winter climates (even if it didn’t adequately pay them;) after the war was quite prosperous.

The United States remained neutral and made huge profits from the war until the war reached a stalemate, then it joined the war, ended it and dictated terms heavily in its favor to both sides, picking up territories.

Italy, on the other hand, didn’t even get the territories it was promised.

I think it’s very far fetched to describe at least choice as a wise decision