If the Orthodox Church is what it claims to be, then it should flourish in America (given religious liberty)
It is not flourishing (as evidenced by inaccurate statistics & questionable conduct)
IMO, therefore, there is a leadership problem. I'll not delve into assumptions of imorality of even crimes. I don't know enough to state anything.
But, even if there were 4 million Orthodox as had been claimed, it would mean just slightly above 1% of American population and we have found out that it is even less.
Here in Brazil, we are waiting this year's census to have new numbers. As from the last one, there were just 50 thousand Orthodox in a country with 190 million. Now we are probably over 200 million and I wouldn't expect the number of Orthodox to have increased much if anything.
Our leaders simply either don't care for growth or actually contain it. The "word of mouth" here in Brazil is that there would be a non-written agreement with the RC to actually contain growth as a kind of political "argument" to be used against RC proselytism in Orthodox lands. Something like: "you see, we contain our growth in a big catholic country, you should do the same here". I really hope that is just a kind of conspirationism because it would be very self-destructive.
In the U.S., which is Protestant, who knows? The point is that not all leaders (and lay people for that matter) see reverent and planned growth as the mission of the Orthodox Church. Some think that they just have to stay there and those who come can be welcomed, but they should not be sought for. But let's go beyond the clergy. Those who finance the Church with donations would keep doing it if it were for a local parish, with a local priest in a poor neighborhood? Again, some would, some wouldn't. This lack of agreement on "what we are here for" is what keeps the Church relatively small in the New World.