I should have wrote:
The following sounds a lot like people singing praises to God aided with the joyful sound of music USING THE INSTRUMENTS THEY HAD ON HAND.
I am always amused when churches say “but they didn’t have an organ or this or that”. I once said to a person who said that to me “Wow you are correct. So let’s do what King David did, he tore off his clothes and danced in the streets”. Usually these people never make a big deal about it again.
I think the term you are looking for legalism, instead of traditionalism. However, these are really minor. I look for the peoples view of Jesus and the nature of God, for me those are the issues not how they play their music or what color their carpet is or if they are hoty toty.