Bards that refuse to use songs are bards who are not confident with their rotations or just bad at it. I can use Ballad or Peon when DPS matters and still pull top to near top DPS.

Just consider this: The increased Action Damage I and II traits (if they stack) gives +30% to action damage (if not just 20%), That's 130% base for our damage (I am not using this as +100% meaning double, I'm taking into account normal unmitigated damage or buffed damage being be 100% by default). Using a song, that only drops it to 110%(100%). There is no "loss of DPS" just a lost of increased DPS.

I have FC members who play BLM in places with constent movement (Amdapor Keep as an example) and their DPS is still high. It's not about mobility being the issue it's knowing WHEN and WHERE to use your attacks