Given that part of Vatican 2 had to do with confirming that bishops were not mid-level managers, but were following the Apostles and acting in conjunction with the Pope, I strongly suspect that if a majority of them (or even a significant minority) were dissatisfied with the OF, they would have resoundingly spoken out.
We in america have a tendency, at times, to think that what goes on here is indicative of the entire world. Not ony was the OF easily adopted in Poland without the attendant abuses, but the whole of Vatican 2 documents were adopted without the chaos that we have seen here. and if you want a reference to that, read George Weigel’s biography of JP 2.
Were the OF to have gone through a complete filtering of the world’s bishops, there may have been some changes, but I seriously doubt there would have been major changes; it is now 48 years later and we still see no evidence of a large or even significant minority of the bishops of the world protesting it. And in 48 years, if the bishops were upset about it, you can bet your last dollar they would have been heard.
I will repeat: 2,147 to 4 is about as close to unanimous as any group that large, and encompassing significant numbers of both liberal and conservative are ever going to get. All of the Vatican 2 popes have had battles with the Curia, starting with John 23 and including Francis. That is not to besmirch the Curia; but to indicate that there has, in the past, been a concentration of decision making and that has changed, starting with the Council.
The bishops are not ignoramuses, nor are they mere managers. And the bishops, I am sure, are as aware as anyone that the exposure of the EF is limited in significant part by the pure number as well as the percentage of Catholics who avail it. Where it is available, the response of people in the pews is not overwhelming; it meets the needs and desires of a small minority and is benefit to them. Again, there simply is no significant minority of bishops agitating against the OF in part or in total in the last 48 years; so your question is answered by history.
And it might be noted that the Constitution was not sloely about the Mass; it also covered the other liturgy of the Church, the LOTH. again, no significant backlash.