I address both issues on the video I'm editing right now, so the proper answer will come with that.

Generally speaking, the movement doesn't "reject" anything: you have to understand that this is not a coercive process. Nothing is outlawed, nor imposed, but we work in order to reduce the conditions that generate negative retroactions. So, trade would be acceptable in and RBE, it just wouldn't make much sense because you'll be given access to what you need. Still, if you want to trade, no problem, go ahead and do it.

What I think is missing is the central point of the whole RBE argument: we need to find a way to live sustainably on the planet in a peaceful, non coercive manner. The free market clearly fails in such regards, as do the socialists regimes, so there is a need for different system. We're trying to figure out the best way to do it with an open discussion, that's all.