Yes, I understood that (and stated as much). The first part made sense to me. It is the second that I find perplexing.

> By contrast, ‘taxes’ are expected to ‘inure[] to the benefit’ of the wider public.

That seems to apply to both taxes and fees as far as I can tell. It seems to me that a tax can primarily be distinguished by virtue of not qualifying as a fee. Put another way, are not fees paid to a government a subset of taxes much as squares are a subset of rectangles?