They don't breed true, but it's not nearly as bad as that video makes it out. I've grown dozens of avocados from seed over the years, and the majority of them

They don't breed true, but it's not nearly as bad as that video makes it out. I've grown dozens of avocados from seed over the years, and the majority of them have good fruit. They aren't the same as the parent I know (and who knows what variety they pollinated with) but it's still a lot of fun to plant one and see what you get. Worst comes to worst, you'll still have a good rootstock!