Some of the richest businessmen in Britain pay less tax than the people who clean their offices.Via Tim Worstall, who points out the mistake. Plain idiocy or motivated propaganda? I suspect the latter.
The ideology is already well established in most people's minds that:
So why not just skip the underlying logic, and make the linguistic transition, so that "pay more tax" is shorthand for "pay a higher rate of tax"? Makes it so much easier for all concerned to remember the ideologically correct way to think about the issue ...