What if a player use the delay clock at extreme situations, would it be ethical?
If you are down under two minutes on the clock with delay, your opponent has little over five minutes on the clock. When your opponent goes under five minutes, your opponent can play out the rest of the game at blitz speed without a scoresheet. If you understand the position is drawish, your opponent can hold back on the movement of the pawns, just to make the game last as long as it can go.
Like the readers perform a test. Set your delay clock at G/2 (t/d 5), have a friend play out the other side. Just play out the pieces in any drawish endgame you want. Just count the moves till one clock falls. If you are a teenager, you should be able to make I feel around 300 - 600 moves before the flag falls. If you are much older, you will find yourself no longer in the play station 2 age group. You could find yourself able to make the delay time for the first 10 or 20 moves before you start to get tired. When you get tired, you can find yourself being upset to play out a drawish game. When you get tired or upset, sooner or later you will start to need more then the 5 seconds to make a move. When that happens, it will start to take away from your two minutes on the clock.
Can understand why players like G/90 or slower time controls. They like to think what they are doing with the position. If you get down to G/2 (t/d 5), this is much faster then ratable blitz. The time delay stops you from asking the director to adjudicate the game under 14H. If it is a draw game, your opponent with the delay clock can force you to play on till you do lose on time.
People have said it is extreme for a player to play out a drawish game with a delay clock. As a tactical idea, it is so ideal to play out the game if your opponent is down to G/2 (t/d 5) and yourself at or over G/5 (t/d 5). I understand it as not ethical to play out a drawish game and hope to win with time. If you read my posts, at extreme situations to play out a draw game to win is so much granted onto us all.