I don't think it's troons in particular, troonery is a symptom. These men were never good husbands, they're all autists, narcissists or navelgazing whiny manchildren like Daniel. Twenty years ago those marriages might have ended because the wife came to realise that or because the guy cheated or put his hands on her, now these dudes just troon out. So the trick is how to avoid marrying toxic people in general, which is already hard and is even harder now because people are brainwashed by the troon lobby to expect and accept abuse.