God does hate divorce. It separates families, which is not His design.
There are two flawed, sinful persons in a marriage, though, and sometimes the situation is beyond retrieval because one or both parties doesn't want to work it out, and is not in submission to God.
I don't think it's the job of other Christians to be the fruit inspectors regarding a given person's marriage, though. They rarely know all the facts. The offended party might not want to publicly disgrace the offending party, so they may be keeping details from being public knowledge. We assume we know all the facts and judge others harshly when its really between the two individuals and God.
I see a few "fruit inspectors" in the bible study chat room when it comes to these issues, besides holding abominable extremes such as claiming that an intact family must separate at conversion if one of the parties was previously incorrectly divorced.
The cult that I belonged to as a young believer taught such a view, and it created havoc amongst many families who joined them. In addition, some of the new converts committed suicide because they believed the cult was the "one true church" and they were unable to live without their families due to this understanding.
The funny thing is that the founder of the group came to "new understanding" about this doctrine when he wanted to marry a much younger lady who had been previously divorced incorrectly according to the teaching. Funny how that happens..
And I bet the few people who hold similar positions in the bible study chatroom would do the same thing in the same circumstance. Pharisees are like that
Mercy is not in their vocabulary until they need it personally.
By the way I've never been divorced or never been married to a divorced person, nor do I plan to be married period, so this issue doesn't affect me personally.
There's a good book on this topic called Divorce and Remarriage by Ralph Woodrow about this issue if anyone is interested in studying it in more detail.