I’ve never heard an opinion one way or another (the RCC is generally not on the COC’s radar, and I’ve never heard any other OO talk about, either, other than recognizing that it was a thing that happened that caused some changes in the way the RCC does things), but I’m going to guess that if there is one it’s probably not very positive. The Latin Church had a venerable liturgy and in the wake of Vatican II turned it into something that even many of its own communicants don’t like. It stands to reason that the Orthodox, who are very serious about keeping the rites and liturgies of our Church unchanged since the days of our fathers, would not like tampering with liturgy on principle, though again since it concerns a communion other than our own, any opinion that you do find (if you find one) doesn’t really amount to much.