3 adjectives to describe faddists

Very few of this variety have appeared at field trials for several years past, but that cannot be considered a valid reason for stigmatising them as "old-men's dogs," as some narrow-minded faddists delight in calling them.

" J.W. had not thought much of the tithe except as being one of those religious fads, and he knew that every church had a few religious faddists.

HUTCHINSON, JOHN, a theological faddist, born in Yorkshire; in his "Thoughts concerning Religion," derived all religion and philosophy from the Bible, but directly, as he insisted, from the original Hebrew, in which view he had a following of a few intelligent people (1674-1737).

3 adjectives to describe  faddists