The bottom line is that no community or sect is immune to divorce. For that matter, divorce per se is not something to be ashamed of and can actually end up being a good thing for the parties involved, including children who might be better off not being raised in a loveless and toxic environment. And of course we know that the Torah allows for divorce since Hashem knew that as humans we are an imperfect lot. Naturally, trying to make a marriage work is preferable over calling it quits, but in certain circumstances staying the course is not possible or even advisable.
In conclusion, attributing divorce among chassidim (occurring much less frequently than in the Jewish population at large) to the shidduch process makes no sense — especially in view of the fact that it seems to work quite nicely for the most part.
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