Of course we need to train both slowly and fast. I was pointing out the importance of slow training for learning to do it fast, not excluding the latter.
In some way, surely, fast training is good for learning to do it slowly
, static training, is important for learning proper jutai
). If we never practice how to do the aikido technique when somebody has grabbed us strongly, we probably get quite sloppy techniques.
And just to avoid misunderstandings: we should not practice gotai only