Read again - "Yeah did OP collect all mounts / pets / transmogs (WQ+drops)? Plenty to do even if you don't look for "power""
No, you didn't say they HAVE to do it but you imply that people should care. If we don't care about that stuff it doesn't count in the "Plenty to do even if you don't look for "power"" bucket.
Obviously the more things you like to do in WoW the more you will find TO do. But most people don't raid or they LFR. Most people likely don't do M+ esp at a high level. The challenge with all of these non-raid content patches is to provide open world content. 7.1 did a decent job of that, 7.2 failed and 7.3 isn't much better.