We laugh at pictures of managers wearing near-identical suits and ties, and then we can look at a bunch of techies wearing near-identical tee shirts and hoodies and somehow not see a culture using clothes to signal belonging to the tribe.
There will always be tribal signals. It's clothes whether suits or plaid flannel, it's drinking bourbon or craft IPAs, it's playing golf or ultimate, it's being clean-shaven or bearded, it's driving a Tesla or a Caddy.
Some of us are not "joiners" and chafe at the idea of carefully selecting our clothes, grooming, music, possessions, and neighbourhood to signal that we want to fit in. But we should at least understand and empathize with why others may find these things comforting.