Full Idea
Deflationism about truth seems to deprive us of any hope of asking genuinely metatheoretical questions, which are the questions that occupy philosophers most of the time.
Gist of Idea
Deflationism seems to block philosophers' main occupation, asking metatheoretical questions
Source
Pascal Engel (Truth [2002], §2.5)
Book Reference
Engel,Pascal: 'Truth' [Acumen 2002], p.54
A Reaction
This seems like the best reason for moving from deflationism to at least minimalism. Clearly one can talk meaningfully about the success of assertions and theories. You can say a sentence is true, but not assert it.