Well, you're really jumping to extremes. :)
I might be talking nonsense, but I read a tactic somewhere based precisely on NOT finishing off Griffin stacks. While these stacks of a few units are beating on the sniper screen, the snipers are busy shooting down full, fat stacks that have nowhere to fly in yet. Does such a tactic exist, or is it rubbish?
P.S. I watched the video about the Titans, but the link to the Griffin Conservatory doesn't open for some reason.
Added after 11 minutes
A question about "delays" and morale.
The battle has started, the Archangels are moving and they get morale. The "takeoff" and "landing" points are fixed. Can "delays" really be used to prevent the Archangels from getting morale?
1) Reduce the animation speed in battle! (Increases the delay)
2) Turn off the special effects volume (this removes the delay before battle)
Added after 2 minutes
Well, someone mentioned that they managed to take out the Titans on the first day without the help of the Griffin Conservatory, maybe someone can explain to me how to do it?