I've seen AI go for buildings with their first follower belief more frequently in my games. Per-follower still has an edge but it's no longer a huge gap. In past patches I usually had the option to wait on a building (other than Orders, Stupas, and sometimes Cathedrals) if I wanted to take Inspiration or Mastery as my first belief. Not anymore. Orders and Cathedrals remain most popular but I've seen Synagogues, Mosques, and Mandirs often grabbed with the first belief as well.