My understanding is that the original note intended is Db5, which itself is outside what would normally be expected of a tenor, F5 is high even for an alto. IMHO "out there" notes are suitable for concert solo performances, rather than for a full performance.
This aria & chorus occurs late in the story, when the hero thinks that he is going to die & his friends imprisoned, for him to suddenly screech in the top half of the treble clef gives the impression that he is crying, quite at odds with his heroic role throughout the rest of the opera.