No, not syncretism- This was the ancient practice of the adaptation of local rituals and symbols- very much like the Christmas Tree or Easter Eggs- to the Great Commission. This happens to this day in Africa, Asia, and South America. To call this syncretism is worst than absurd. It show a misunderstanding of historical practices.
Taking in-depth instruction in a curriculum of studies that spans these subjects would illuminate the mind rather than quick quotes from Wikipedia. Indeed, there are several other nterpretations of gargoyles as part of the artifacts on medieval Cathedral construction.
1 : the combination of different forms of belief or practice
2 : the fusion of two or more originally different inflectional forms
— syn·cre·tist \-tist\ noun or adjective
— syn·cre·tis·tic \ˌsiŋ-krə-ˈtis-tik, ˌsin-\ adjective