Of course there is no rule saying your wife needs to have screenshots of video calls with their family. Likewise, of course, if they asked you for them, doesn't make them a communist. And its nonsense that you say they have less than a 50% chance of passing.
My Wife passed after less than a minute of questions, and we follow this very carefully, and it is extremely rare that someone is denied, and it is always for a pretty good reason.
It is very simple. There are a lot of creeps and lets say "bad men" marrying and taking advantage of the Filipinos. Perhaps vice versa too, but that is another matter. There is a huge amount of abuse. If fact, during my Wife's CFO seminar the instructor got a text message from one of her attendees begging for help for getting back to the Philippines.
The CFO exists to protect against this abuse. If they sense a red flag they are free to ask for anything such as screenshots or videos of her talking to your family. That seems reasonable to me if there was a reason they had a red flag, You are bring a Filipino and her young child, who probably don't have any resources and will be totally dependent on you. They don't want them to be abused. As I said they see it all the time.
What's the big deal, it seems pretty simple to have some video calls with your family, to help make sure they will be safe, and to give her more contacts in case of an emergency.
The way your reacting and insulting the Philippines might have been reflected in her interview and gave them a concern, which in turn made them ask for some additional information.
Like others have said, the CFO is typically a breeze. Though I admit, its possible she might have gotten a new CFO agent who is poorly trained and inexperienced, so I'm not judging you. But you should just understand they are trying to protect her and a little daughter against abuse or being abandoned when brought across the planet and be a little more understanding see it from their perspective.