Yes, that's the point of the clip solution IMO. To let a simple lump on the reverse of the bezel work to stop the hinge sliding out , while also meaning the hinge can be taken out simply as a coherent unit.
A block in the base makes sense simply as a way to stop the axis falling out and breaking the lid while shorting something out internally, should the clip fail. I don't envisage it taking any load normally.
Hmm I suppose one downside of the clip over a nut is that if it's set so that the spring is at all compressed (which it needs to be I suspect), it'll tend to launch the hinge pieces along the axis when you remove it. I've no idea how far it would launch them, and if this would be a problem for any hackers, but it might be worth considering.