He was told so often that BU is NOT about an unlimited blocksize. It's about user's voice. With BU you, as a node, can even vote for smaller blocks, and when things come as they come and 1 MB blocks are too much for miners and nodes, they would be cut to say 0.8 with BU. As you wish small blocks and high fees, BU would give you the option to express this by setting the blocklimit. If miners think the same blocks will ever kept small.

But to be honest, the economic theory behind BU is that there already is a fee market whose mechanics are the orphans. There is a paper from Peter_R about it. It says a fee market doesn't need no blocklimit. But I think he didn't took the relay network into perspective, so this fee market currently doesn't exist, but maybe will exist with bigger blocks.