That's not true at all. You think games would feel as immersive if everything was Calibri? Magazine-style articles would feel as tactile if they all used the same system fonts? Etc.

You may not care about fonts, but to say they don't matter is a misunderstanding. For example, I could glibly say we only need one programming language (the user doesn't care what syntax you used before it was compiled down to 1s and 0s!), but any engineer would make the case why that's not true at all.

Seriously. It amazes me what one person's sense of "deep suffering" is compared to another's.

The Total Perspective Vortex comes to mind.