[Planktonne]

You don't need to accustom yourself to every individual accent; you need to practice hearing people say things in different ways. Once you are comfortable with some voices that are different to yours, it's much easier to understand other differences as well.

I'm sympathetic to audio quality issues. No one would object if they developed tech to improve call quality, but they didn't.

[stingraycharles]

I think you’re not taking into account that there are people from hundreds of countries out there whose native language is not English, that are not exposed to different English accents at all other than watching movies etc, and suddenly having to deal with weird accents.

You expect everyone to learn every accent?