@boag
I see you're only focusing the entire plotline unto this one chapter alone? Well, this chapter is full of stupid decisions that I can tell you stuff like this happens in real life. I understand that it is idiotic, but there are a lot of people who have relationships that this here chapter has in common and have happened before.
you said, "She getting angry that her husband is courting other females makes no sense." Women, they think differently, and not all women can accept everything. I even have a friend who had this same kind of situation happen, and I was also as stump as you on as to why she would even overreact as much as that. Especially more so when that woman strongly prefers a monogamous relationship. They're not just dragons and mear animals for the male to incessantly mate just any dragon they have a more intelligent aspect to them that differs not to us humans since they're not like those low leveled dragons who act truly like animals due to their low intelligence. But, they're dragon levels are different and are the same as humans.
Also, you're saying, "Worst yet, Wazu identifying this as bad also doesn't make any sense because he is actively trying to achieve what he just berated Dragnar over." Yes, it is stupid to see for a person who had given up on the thought of love for himself. But, it doesn't mean that you can't help others and don't feel any empathy towards the situation. Wazu reacting that way is somewhat normal since he hasn't any love life anymore nor even married and that guy who had it all would treat a woman like that? Heck, of course, anyone who had a love life once would react like that and try to butt in, even more so when that person is a friend. Only those who don't have friends and have those dragons as just mere acquaintances, and add up the dark, gloomy heart, would not even think of trying to help. But, Wazu and those dragons are friends, and friends would help each other out.
"Tell me that Saronas leaving right now makes any sense, and isn't narratively coerced by the writer." That depends on different situations. If you focus on realism, then that is stupid since she had a task to uphold in her village as a protector. But, this is romance, the writer would try to make outrageous decisions. I don't know if you've watched "telenovelas" or drama, I tell you - what this manga's new adaptation plot is no different than what the telenovelas and drama series that I had watched before. Heck, even the telenovelas have many character decisions that don't make any sense. But, if you only put and focus on "Pure Logic" on all arrangements for the character then there would be no drama and everything would be like a business exchange and less emotional and dramatic kind of feel. But love is different, logic is meaningless, and once the love is so strong, you'll lose sense on what's right. Love can be different for all like a love of an object, love of doing evil, love of doing good, or love for someone else. Only love is where logic becomes blurry, and that person would prefer to focus on the "emotional aspect" rather than the logic and "reasonable aspect."