Completely false. Timeless Isle, if you need to grind it, can be "powered out" over a weekend with the exception of ONE daily. Dailies require a commitment of X hours per day which is often (especially for a working person) worse than being able to power out over the weekend. Dailies are the pinnacle of inflexibility.
Same with "daily heroics" for instance.
Weeklies would be a better choice. 5.1 was also ONE hub, not 3. In ONE place (that you now have to plod to, not fly to), not three. Minus story missions. Supermassive difference.