A few reasons why this is a bad idea.

1. Yes it is boring.

2. PvP can get away with it, because fights arent scripted and 100% predictable such as how PvE fights are. Farming fights pressing the same button, doing the same thing over and over is boring and repetitive.

3. Hand and finger fatigue.

4. People already try to not perform at the best of their ability, giving them more reasons to do as little as possible is going to make dungeons and trials take that much longer.

5. Yoshida already said no, and he really should stick to his word.

6. Please stop asking them to simplify things. The game is way more than simple now.