As it see it, what people wear is totally irrelevant unless they are a firefighter etc & need clothes which protect them.
Frankly, the bloke in the left seat could be sitting up there stark
naked or in the loudest shirt & shorts one could imagine - as long as he can fly the bloody thing I really don't care. Give me a rough & ready bush pilot in slacks any day over some newbie with a well turned out uniform.
Often the fancier the uniform or clothes, the dumber the contents.
Similarly, my clients pay me for what I know & can do, not how I dress & if anyone ever says anything, they are firmly reminded of such & how it earns me in a day what they struggle to earn in a week.