Does Philosophy of Religion exist?

Google “Philosophy of Religion” and see what pops up…
(or just click here)

Look at key textbooks with the title (or click here)

What you will note is the Theistic focus of the topics – the nature of God, arguments for/against God, the Problem of Evil, etc.

Is this discipline which has grown up most notably in Anglo-American philosophy, not better titled ‘The Philosophy of Theism’?