His voice was important to mention because it was very loud and piercing. That may come in handy when he's trying to explain to people where their seats are amid the audience noise before the show, but he absolutely did not need to be that loud during the music. I've never experienced that before, even yes, when other ushers have had to do similar things as a show starts.
It may be one thing to do that at the top of a loud overture - but doing that during the violin solo opening to Fiddler is just inexcusable, and if that's how the ushers were instructed to handle things, that's equally inexcusable. I might be angry at the patrons who waited to turn their phones off, but two wrongs don't make a right, and I choose to blame the usher.
Patti is on Broadway where she is needed. Thank you. :-)