A solution to NOT drill your track forks and have a normal front brake nonetheless

You're still not getting it.
I read what RPM said to just mean if you attached ANYTHING to the star nut bolt which would allow you to exert leverage on it, it would move easily as it wasn't designed for anything more than applying a pretty small amount of vertical pressure onto the headset.

I do get that very well and it does not matter at the moment, both starnut and expander need to be tried in reality before any judgement is made. I do not welcome RPMs "give up before testing attitude" when there are many people here who like the idea and presumably, *both *starnut and expander versions will actually do fine.