They’re both useful, a cricle’s circumference as τr is lovely but πr2 is certainly more elegant for area. The real pity is that they didn’t use the symbols the other way round - if τ = 3.1… and π =6.2… you have a natural π =τ+τ which makes sense (visually, conventionally mathematically it’s nonsense!)

Huh, this made realise I don’t think I’ve ever dreamed about punching something. And I’ve had many decades of quite vivid and varied dreams.

I’m glad I looked that up. Pi is wrong. I’m a convert.