A weaker currency is better for exports. So Italy can export cars, or olive oil, and the foreign currency it receives will buy more euros for paying employees, local suppliers, etc.
Inflation redistributes wealth from people who earn and save in local currency (lower and middle class most impacted) to benefit those who deal more in foreign currency (upper middle class, rich people).
Any inflation above the stability rate, produced by monetary policy, is government thievery plain and simple. I say this as an exporter who financially benefits from local currency inflation.
Only for exports that don't rely on imported components, because such components will get more expensive.
This doesn't matter. You buy wheat at $100 and sell breads at $250. You net $150 and convert that to, say, €150.