Hmm, I don't think I'd say it, either, but I might think it deep down. A respect for the tradition (and I don't mean "dead weight of") would influence me, subconsciously at least. Or worse, make me feel that my version just had to be different. I'm not sure how you escape that trap.

But if the "original" is not "definitive" in any way, then it is to be regarded only as another option. Yes, if the only version of a song you have heard is by Martin Carthy (sorry, Martin, nothing personal) then hearing Joseph Taylor's version will widen your knowledge and teach you something. But if you've already heard not just Martin Carthy but Maddy Prior, Fred Jordan, Jane and Amanda Threlfall, even Ron Baxter....then is going back to Joseph Taylor adding more than just another version?

Historic interest excepted.