That's really messed up. It doesn't affect my experience as a customer and frankly I'd anything, it makes things better, because mask also blocks any droplets. So if employee even gets a cold I'm less likely to catch it too.
It should be treated like wearing a hair net.

If employee wants to wear it, it is hard for me do see any downside by letting them.

Just another reason not to go to In-N-Out

You mean besides the shitty burgers and fries?

It depends what you look for in the budger. If you like a big portion, a lot of meat, then In n Out is not for you.

But a lot of people like burger created that way.

I’ll notice that you didn’t say anything about their fries. It’s ok. Their fries are indefensible.

They're edible if you get them "well done". Then they're like rectangular potato chips.