I consider all of these habits to be instances of a general “policy of transience”, which says: things should either be deliberately permanent in an organised way, or strictly temporary. I dislike things accidentally turning out to last for ever.
The modern workforce shouldn't be flinging copies to each other. A copy is outdated the moment it is downloaded. A copy has no protection against illicit reading. A copy can never be revoked.
As usual I got a TON of great answers and learned about a bunch of very popular git config options that I’d never heard of. I’m going to list the options, starting with (very roughly) the most popular ones.