Whatjd, you have to be a little more specific, we seem to have too many different kind of "Blues's"; Delta Blues, country Blues, chicken little blues, Gumbo Blues, and I don't know what else; you see my point.
I'm 100% on your side because I have never liked "Delta Blues" and in no way should it be included with jazz.
However, here is where confusion arises; one of my favorite tunes is "Sandra's Blues"; I knew Sandra, and I remember when she got the Blues, it was because of that no count man she was foolin around with; but Sandra didn't like Blues she was strictly into jazz, the same as the artists who are playing this tune.
https://www.youtube.com/watch?v=VhgUUe5czxc
Maybe you could clarify that bit of confusion.