I wonder how they resolved all of the scriptures about wine?
By not thoroughly interpreting the Bible.
It's really just that simple, because it's the only way one could come to the conclusion that wine should be replaced with grape juice.
The Bible has a sizable amount to say about alcohol, but nowhere is it actually condemned.
Scripture speaks of drunkenness, or in a clearer context, warns about problems which can arise from alcoholism.
The irony is that it only takes basic knowledge of Scripture to know that, which is why I've always been both bemused and a bit frustrated with all these Christians going to such lengths to demonize alcohol, or to take it out of everything.
And then there's the observation that conviction against alcohol came well before the notion that wine was just 'grape juice'. They decided that the disciples nor Jesus should have ever drunk wine, and so they make all these lame attempts to try and say they didn't or to 'prove' it was wine.
Fortunately, it can and has been proven, as it would have been pretty much impossible for them to have grape juice through the year from harvest.
It's just an example of uneducated fringes through Christendom trying to make a big deal out of random things is all.