Would the author agree that “public occultism” is an oxymoron to begin with, hence the title already foreshadowing the watered-down outcome “public occultism” nowadays shows?
Sure. Real occult groups have never relied on having any kind of public persona to be successful. There is also plenty of proper occultism which never gets mentioned in the internet ever. Anyone who judges a magical order’s success based on its number of Facebook likes is on the wrong track entirely.
Sol Ascendans - The Website of Alex Sumner 
Consummatum est.
Would the author agree that “public occultism” is an oxymoron to begin with, hence the title already foreshadowing the watered-down outcome “public occultism” nowadays shows?
Sure. Real occult groups have never relied on having any kind of public persona to be successful. There is also plenty of proper occultism which never gets mentioned in the internet ever. Anyone who judges a magical order’s success based on its number of Facebook likes is on the wrong track entirely.