NO it is not. Learn the songs and when they are a part of you then sing them out.
If you want to do that then stick to Shape Note as it is O K there.
It is not O K to sing from a lap top or a palm top scrolling at the "right" speed
The songs that you sing should mean something to you as it is the songs that have credence not the singer. As one of my favourite trad singers put it"Some people stand in front of the song whilst others stand behind it"