That's exactly right. Shakespeare in the original is a bit better (easier to understand) than Chaucer in the original, but theaters around the world are not going to present it in that way.
Chaucer in the original: it's beautiful, and better as poetry because you can hear the rhymes and the meter, but....
https://www.youtube.com/watch?v=e0ybnLRf3gU
I don't see the point in trying to revive that as a language.
How nice you brought up Rosa Ponselle. One of my closest friends is a music teacher and privately gives voice lessons. Her greatest regret is that she never had a career as a professional opera singer. It's been wonderful sharing this music with someone so informed, especially after my father's death. It was he who introduced me to opera. He knew all the Italian operas by heart, and sang them to me when I was a fractious baby and toddler who didn't want to go to sleep. As she grew to know my tastes, she said to me: You would love Rosa Ponselle. She was right: I do. :)
In a way I know what your relatives mean about the Ave Maria. It has, to me, a very melancholy melody, but it doesn't frighten me; it soothes and comforts me, even now when I've parted ways with the Church. I suppose I and many of the people I know associate it with our mothers. Italians are very sentimental about their mothers. The devotion to the mother symbol, and the mother and child, is particularly strong in our "brand" of Catholicism, too, at least in the days when more people were believers. I know Mary was important in all Catholic countries, but I've always thought there were more Madonna and Child representations in Italian churches, and privately, for that matter, than anywhere else in the world. When I was a child and teen-ager and very devout, all my prayers were to Mary: the Ave Maria, Hail Holy Queen, the Memorare, the Magnificat. I know that's something Protestants don't understand, but that's the way it was. Mary wore my mother's face, but was more powerful. I suppose it helped that we also play it at all our weddings. While it plays, after Communion is served, the bride brings a bouquet of flowers, sometimes her own, to the feet of Mary's statue right to the side of the altar.
If sung well, the Ave Maria always makes me a little teary. Listening to Rosa Ponselle sing it left me really crying, but I loved it. Thank-you.
Btw, I'm consistent in my likes and dislikes. :) Although the performers don't have to be Italian, I always prefer an Italianate style: I love Jussi Bjorling, for example. I put it down to the fact that I grew up listening not only to Caruso, but to Beniamino Gigli.