Re: Are these the future bananas?
Not only will those male flowers not form fruit, but even if your plant did form fruit, it would not be "edible" in the banana sense. Your plant is a wild species, Musa balbisiana, which forms very seedy fruit when pollinated, but if not pollinated which can easily happen in cultivation, the fruits will not develop. I have seen M. balbisiana grow fine in the Bay Area, it is a hardy plant and a nice landscape specimen, but not useful for making fruit. The plant is excellent for most other non-fruit uses of bananas however.
Growing bananas in Colorado, Washington, Hawaii since 2004. Commercial banana farmer, 200+ varieties.