This doesn't rub me the wrong way at all tbh. But then again I've made about 12-13 friends since launch that I run dungeons/fractals regularly with so I'm not worried about finding groups. As for it being a longer dungeon, I guess some of us want that. Should we be denied a longer, more demanding, experience that we find rewarding since others don't have the time? No offense, but should I not get my legendary because some people will never spend enough time to get theirs?
There will always be plenty of things to do if you only have 30 mins to play. You can't expect every bit of content in a game this large, that is intended to be played with others, to be doable solo in under 30 minutes.
I think OP is talking about the inconsistency. Up to this point, the "Living Story" has been completely solo-able. Now the finale to the "Living Story" is only possible in a long dungeon that requires group play. ANet did the same thing with the personal story. The whole story was able to be done solo but the last mission required the completion of a group dungeon.