From what I have learned-mostly from a friend who was Catholic and converted to Orthodoxy-a lot of Roman Catholic clergy think the Orthodox Church is hidebound by tradition, not 'socially relevant to the moder world,' since it is not under the Pope, "a big mistake" to join it. He bore the brunt of all these criticisms when he became Orthodox ... from clergy at the Roman Catholic Seminary he attended, as well as his home parish clergy, and some other clergy he knew. This was in the 1980s, so these were not exactly 'enlightened opinions for the time.'
I read a book by a Greek Catholic man who had been imprisoned in the Soviet Union. This book came out in the 1990s; the man stated flat out, without any apology whatsoever, that the Russian Orthodox Church was "heretical," and no salvation could be found without the Pope. So, whatever 'enlightened opinions' are shared at ecumenical love fests, that does not mean they are held by many individual Catholics.