IMO team X needs or wants something and tries to get the other teams to accept it too. The other teams might not need it and in fact it might make life more complicated and difficult. If anyone objects then the last resort is "best practice" which is an incantation that appeals to leadership and everyone who doesn't really know how the sausage gets made in the various teams.

It's ego to think you know everything and that your needs are paramount - but it's not ego to try to make life better for everyone.

....and that's the problem because sometimes you ARE right and sometimes you're not.