Not with VoLTE and FaceTime Audio around now. Inter-carrier calls can still suck, but I now have noise canceling headphones which enables me to get a much more intelligent signal out of the mouth of the other caller than I could with just the call speaker held up to my ear.

There’s a lot that still sucks, but I don’t miss landlines the slightest bit. Scheduled do not disturb is a godsend next to trying to remember to turn the ringer on the landline in the hallway off at night.