Edit: Why are people downvoting this?
I don't understand what's so confusing about SilasX's argument.
Removing cliffs and changing it to a smooth dropoff is good.
But that dropoff doesn't have to be £.63 in benefits per £1 earned. That's a pretty big effective marginal tax rate! Why not £.50 or £.30?
It should be extremely easy to understand how this proposal works, right?
It would technically bring more people into the system, but they'd be at the top end, and therefore only be receiving a small fraction of the current levels of benefits. It's totally doable.