The organ has fallen out of favor. According to the prevailing culture (for better or, usually, for worse), the piano has replaced it.
Still better than local youth masses with drums and electric guitar. On the positive side, shredding, feedback and drumstick spinning are still verboten.
A little anecdote. The priest who married us about a million years ago was due to move. He was assigned to a beautiful proto-cathedral. Father is very orthodox and wears 100 year old vestments that he finds in other parish rectories. When he arrived, there was a fellow with an acoustic guitar singing folksy versions of liturgical music.
The next time we visited, he asked us, “Remember the guitar guy?” “I got rid of him.”
He has a choir chanting now.