It annoys me most when it’s something that doesn’t need a voice in the first place.

A few beeps would have done the job perfectly, but no, my bluetooth headphones insist on using the most awful sounding loud, nasally whingeing American harpy voice to say:
“Heeadphoenes conneecteed”
“Heeadphoenes disconeeected”
“powerrrrrrrrrrr ahfff”