I guess I'm not understanding the nature of the objection.
Perhaps this advice is an emotional trigger for those who've lived in the JW culture of abuse (?)
Nobody should put up with abuse, but when you step outside of that context, marriage very often is about allowing yourself to be wronged in various other ways.
A perfect example (Although probably not what the author had in mind...) is the process of helping a spouse out of this cult. Those of us who've been through this ordeal have put up with a great deal of crap along the way.
I put up with it because I knew the glassy-eyed, slack-jawed automaton spouting platitudes that would insult the intelligence of a nine-year-old was not my wife. The kind, considerate and very intelligent person I married was still in there somewhere.
But even in day to day mundanity, things as simple as a tooth-ache, hormones or even a mental lapse can make people do and say things that are out of the character.
Surely these aren't hills worth dying on, are they?