Well, even though I am a non-observant Jew, I do not believe that the laws and customs of Judaism can be "rationalized" into insignificance. I simply have chosen not to observe them. I don't dismiss them or try to make excuses for them, or myself.
Reading the article, I found myself confused, and possibly a bit amused, by the statements of Reform Jews (who DO wish to rationalize and dilute Jewish law) that kosher wine is what they want, but they want to reduce the rules required to make a wine kosher. At what point does the fact that the wine is kosher become meaningless? Oh, well, if the wine can be made by non-Jews, then isn't all wine kosher? Grapes are, after all, fruits and, by Jewish law, all fruit is kosher as long as you make sure there are no insects on it. They might has well purchase whatever wine they wish and wave a wand over it and, poof!, it will be kosher.