One of the most disruptive changes was the master-> something else.

Sure the default is now main. But for a few months teams came up with their own standards. Now when I'm working on large scale changes across many systems I continously have too be aware of these new defaults.

trunk main dev develop main prod Canary ...etc this is time I wish I didn't have to spend. The amount of effort I've had to spend has done nothing to benefit race relationships and of course we still have master branches laying around.