How can you be prepared for something you don't know the outcome of ? Also it takes a couple months before you can tell genders !
What would you have done if you were in the same situation ?
Just to clear up some emu info here:
Emus are not sexually mature for two to three years. That means you have two years after they hatch to come up with some sort of housing solution, find another chick/adult bird to balance out gender ratios, etc.
Gender can be determined quite early on. Since you mentioned it can take several months, I assume they did DNA testing, because otherwise, it takes longer than a couple months to tell gender based on behavior and vocalizations, etc.
So, DNA sexing can be done as soon as they hatch. You only have to wait a few months to do it if you're wanting to use feathers, because you have to wait for them to grow actual feathers in, since down and 'baby feathers' don't work. But if you use blood, or better yet, the eggshell, you can have them DNA sexed as soon as they hatch. Which is what I did with mine. I knew all the genders of my emus before they were week old.
Even with waiting the few months to be able to use feathers, then that still means you know the gender at a few months old, giving you at least 15 months (since sometimes females will come into maturity in their second Fall, at 18 months) and quite possibly longer to figure out a pasture situation to keep them separate, or to find another male.
I've never watched this channel myself, I can't say anything about the treatment of their animals because I've never watched, so really I'm just posting to provide emu info. With emus you definitely have plenty of time to get something figured out with regards to breeding and hormonal behavior, because of how long it takes them to mature.
Maybe they were going to try to run a trio, I don't know. Sometimes, with some birds, you
can get that to work. But you have to have a backup plan if it doesn't, and again, you'd have 15 months to three years to figure out what that plan should be and get it in place.