I visited a parishioner, married to a Russian Orthodox today, it was their silver wedding, one of the other guests was a young Russian Priest , glad I wore a cassock, he had just finished studying in Paris. We chatted, he had just read the Holy Father's Jesus of Nazareth, and was very impressed, or at least said, with a smile, "It was very good for a Western Bishop!"
He was glad about the Motu Proprio, "at leat we can identify a common origin", complained about an ecumenical service he had been to in a Catholic Church, last time he was in England, in which he had to sit next to a woman vicar, "a priestess!, who read the Holy Gospel! while we sat!"
We then got back to speaking about the Pope, and he seemed to share my view that he wanted to take the Catholic Church "back to the first milenium, when we were one". Then he asked me, "But why has he abandoned his Crown? Our bishops all wear them! Is he making a veiled criticism?"
Then he went into went into a description of various Episcopal Crowns he had known, his father was a priest but his great grandfather had been a jeweller in St Petersburg in the Faberge workshops.