> Here you are retconing. The religio or bond/obligation refers to a monastic vow.
I didn't realize the etymology was in dispute, so my bad. But regardless of whether religare or relegare is the etymological origin of religio, wouldn't either predate the concept of a monastic bond by centuries?
The word religion means to "bind back" or "yoke" [edited], i.e. to seek an understanding of the universe and our place in it.
Here you are retconing. The religio or bond/obligation refers to a monastic vow. It has nothing to do with seeking an understanding of the universe or our place in it. Therefore, the etymology of the word religion is completely irrelevant to the conversation.