It's a pretty good podcast. I listen to it on Spotify once in a while when I have time. No YouTube here.
As with everything else in this business, I'm sure there's quite a few of the guests that ain't profitable traders, including a few vendors shilling for their own services.
That said, there's been some impressive guests on there, i.e., Market Wizards from the original Schwager books, Quallamaggie, etc.
I don't know anything about Lance Breitstein, but I seemed to recall enjoying his interview. I see that on Twitter he titulates himself as an ex trader and now an 'advisor' for SMB Capital, so I imagine he may have gone down the educator path as so many before him.