Don't we have to put this all into perspective Rainy.
Prayer is personal so to carry out such is a mission by oneself or sit silently in a church to silently whisper to God?
Going to church when the church calls is a different matter. We are in communion and of course follow the preacher where I think there are limitations otherwise the preacher may , in his "wisdom" try and uplift his congregation by introducing some other form that has crept into the church over time.
I am not saying there are official ways to conduct the congregation but our feelings and thoughts about communicating to God should, in my opinion kept within a certain criteria so that pride or even arrogance is left outside the environment of the sacred place.
I see a lot of ego in that video Rainy which is just senseless hogwash and it denies others that wish to attend.
I have seen services shown by YouTube that I think are beautiful and I think that if such services were shown in my town I would love the environment it displays and perhaps attend.
This video is not favouring any such religious denominations but it's environment has a togetherness in a simple glorification to God.