Full Idea
I argue that category mistakes are infelicitous because they suffer from (pragmatic) presupposition failure, ...but I reject the 'naive pragmatic approach' according to which category mistakes are infelicitous because they are trivially true or false.
Gist of Idea
Category mistakes suffer from pragmatic presupposition failure (which is not mere triviality)
Source
Ofra Magidor (Category Mistakes [2013], 5.1)
Book Reference
Magidor,Ofra: 'Category Mistakes' [OUP 2013], p.111
A Reaction
She supports her case quite well, but I vote for them being false. The falsity may involve presuppositions. 'Two is green' is a category mistake, and false, because 'two' lacks the preconditions for anything to be coloured (notably, emitting light).