[watwut]

Comes from culture which celebrates dudes who refused ties and oftentimes is proud of not trusting people in business wear (e.g. tie).

I mean it seriously, if everyone wears business, then it is what it is. If you wear flip flops and metal t-shit, thensuring female street wear should be fine too.

Besides that, tech culture seems to be all proud about rejecting attire formalities and about business being stupid for insisting on them.