Back in 2001 Stephen Fry appeared on the BBC tv panel show Room 101 and talked about his dislike of AQI or Australian Question Intonation.
This trait is when someone raises the pitch of their voice at the end of sentences as if they were questions, but in fact they are not. “Uptalk” is common amongst Australian and American accents and seems to prevail amongst younger people.
I understand that languages evolve, but listening to someone constantly use an upward inflection to finish every sentence makes the speaker appear whiny and insecure.
It is annoying, but what can you do?