Personally I agree with the MBUF method. It is the only sustainable recovery mechanism, taking into account the realities of modern life. We're not in the 60s anymore - we don't need 60s solutions. MBUF is ideal, but its implementation needs to be deeply scrutinised, and subjected to analysis in terms of current economic and social conditions. This wasn't done in SA to be honest. Van Niekerk based his MBUF proposal on a similar proposal from the US, in fact he pretty much verbatim plagiarised it and transposed it onto SA conditions. That is not the level of investigation we should be dealing with.
In principle I have no issue with MBUF, but its adoption in e-tolling in Gauteng is atrocious, transparent as a block of wood, and shrouded in far too many questionable dealings to be considered worthy of accepting. On these basis' alone, you should be on Outa's side. Bear in mind that they are not proposing a fuel-levy alone. They have a few proposals on the table that are hybrid models that are viable. Their levy proposal also recovers the money in a less risky time-frame so it also does have merit to a degree, but the precedent should not be set at levies alone. That is not their only proposal. What they are trying to figure out is the most ideal method to legally object to the system, but that argument won't necessarily reflect their core objections entirely...