It looks like most of the roots are on the wrong end. Does it matter? How deep do you plant them after they are rooted?

That was part of the point of the pictures. There had been some previous discussioin about whether the white "bumps" were root initials, and these pix would seem to indicate that the answer is "yes", and that roots can grown anywhere on the scion.

I planted these with about 1/2 of the twig above the soil, and 1/2 below.

I had similar (bag) twigs sprout roots ALL over the place!
Of course you always plant the TOP part UP (even if with
roots). What I have observed so far, is that later they
turn into (ugly) brown wart like knobs that hopefully
will fade away as the fig grows...

Fortunately for it is a flavor contest, not a beauty contest