I was actually confused when Windwall blocked Sona's ult
I always thought it was a beam like Azir or Vel'Koz's autos, I had no clue it actually counted until it got blocked. I understand that riot wants to make things more consistent, but there are things like Thresh's autos which aren't blocked but look identical to his hook ability, and things like Sona's ult, which connects to her like these non projectile auto attacks but look like Xerath Qs or other non projectiles.