The Japanese rules of Go should not be used for online play. In my opinion they should not be used ever even in OTB games. They should be put in a museum.
Yes, it is. These moves need to played. It is true that they do not need to be played “according to the rules” if both players agree on that. Just to reiterate:
- Even in that scenario the dame has to be filled.
- This procedure does require that both players agree to it.