> but it cannot convey a person's facial expressions or emotions that otherwise might be present in their voice.
We're now talking software development, right? I accept that those things can be very important in other endeavours, but to me the person's well thought out and articulated opinions are much more useful than all those things. I agree, it takes time to put your thoughts in writing and often you end up tweaking your original ideas because you realized a better way of doing something while writing them down, but that saves a lot of time for both parties, provides a solid piece of documentation you can refer back to afterwards, and usually results in a better implementation which covers more edge cases, has fewer bugs and is more maintainable in the end.
> and so the company pays for travel when that is needed
In my experience it's almost always been a waste of time and money. It did provide other benefits, such as getting the remote people to hang out together, but that's neither here nor there. But then again, I never really valued whiteboard conversations much over discussing in writing (slack/email).