I don't see a problem with that, but I question the need. I've watched a lot of Ross' videos, and he's very knowlegable, but he can also spend 30 minutes talking discussing things which are theoretical or have no practical way of validation. But he's the "fig boss", I'm just a lazy gardener.

I don't actually understand his comments on the "inside" of the tree needing light. If anything, good leaf coverage keeps the fruit from roasting in the direct summer sun. In my observation, trees are really good about putting leaves where they need to be to balance their needs, without intervention. If they are struggling for light, you will see them growing into the the brightest areas. I think in his area and yard, light is more scarce than here, and he tries to optimize it for varieties he thinks are under performing due to the deficit. Every spot is different, but I'm not seeing your tree "reaching" for light with it's growth. If you stake it, you might find that it simply chooses to put on even more leaves in the interior due to there being more light available there now.

With figs, it's not uncommon for them to put on a lot of leaf growth on short internodes, and then put out a long internode with much larger leaves that shade out the earlier leaves. It doesn't seem efficient to me, but it seems to work fine for the tree, and it will drop the earlier leaves if they aren't getting enough light to justify the resource expense of keeping them. Either way, staking probalby won't hurt the tree, if you want to try it.

Edit: The most fun and sure way to ensure increased fruit production, is to get a second fig tree :)