Ulster Fry
Puritan Board Freshman
I would say that, today at least, a philosopher is someone who works or previously worked professionally as a philosopher. They have published in philosophy journals etc. There are many theologians who have a very good grasp of philosophy and who have even written books on philosophy, but that doesn't make one a philosopher.
The thing is, contemporary philosophers of religion such as Plantinga, Swinburne, Van Inwagen, WLC, etc are well respected philosophers in secular academia, even if their views are rejected. Presuppositionalists ought to be able to defend their philosophy at the same level. The fact is that if other Christian philosophers can get a hearing in the biggest universities and have their views taken seriously, then there is no excuse for the presuppositionalists not to be doing the same. It really is quite an irrelevant system in terms of its impact outside of a small subsection of Reformed Christianity. Compare that to something like Reformed epistemology.
The thing is, contemporary philosophers of religion such as Plantinga, Swinburne, Van Inwagen, WLC, etc are well respected philosophers in secular academia, even if their views are rejected. Presuppositionalists ought to be able to defend their philosophy at the same level. The fact is that if other Christian philosophers can get a hearing in the biggest universities and have their views taken seriously, then there is no excuse for the presuppositionalists not to be doing the same. It really is quite an irrelevant system in terms of its impact outside of a small subsection of Reformed Christianity. Compare that to something like Reformed epistemology.