I can think of one disadvantage - no confession behind a screen. God bless him in his ministry!
Or give everyone 8 Hail Marys.
No worse than my confession (mind you, my FIRST confession) to a religious order priest for whom English was NOT a first language . . . it was somewhat entertaining in hindsight, but very nerve-wracking at the time. It would have been completely impossible behind a screen . . .
We have a friend who is now 100 years old and was a deaf Episcopalian priest. He went all over the northeast ministering to the deaf in their homes because churches weren’t equipped to do that. What a dear and precious man he is. God has blessed him with long life and a glowing countenance.