> 24. Wherever possible, use AngularJS versions of JavaScript functionality. So instead of setInterval, use the $interval service....It becomes easier to mock them or write unit tests

I've always been very against these angular versions of basic js functions because it requires everyone on the team to learn them and it puts you even deeper into the angular lock in swamp, hindering you from eventually changing your view-framework in the future. Any takes on this?

I like the data binding of angular but try to restrict angular coming in contact with "core" code. As example we hardly write any services, we just use them to hold an instance of plain js-classes that can easily be reused in non angular projects.