Pitwall is all for show ... Team boss Toto Wolff does not sit on the pit wall, instead preferring a seat in the garage at the central console overseeing operations
Toto Wolff is also not an engineering or race oriented team boss, he's a finance guy. He lets the engineers and race experts do their thing while he does his thing.
I've no doubt the reason he is there is because he enjoys being at the races, not because of how it looks.