I’ve noticed this at every fast food place I’ve ever been to in my life. Often it’s bad enough that I’ll have to repeat my order. That’s wasted time, something fast food places aren’t too big on.
I can buy a $3 microphone and a $5 speaker and have them sound worlds better than any drive through. Or I can pick up a cell phone and call someone across the world and have it sound like they’re in the next room. Why is it so hard for companies with ridiculous amounts of money to set up a drive-through system that doesn’t sound like the kind of $10 walkie-talkies I would get as a kid, then throw in the trash after ten minutes of use?