Right, but on Episode 4 it still looks like the elk tracker from the side profile, and that's after he leaves Bill ane Franks. Maybe he used the trailblazer towards the finale? The elk tracker is still in production (you can even order them on irish setters website). I couldn't find any older pairs with the round emblem aside from a single 10.5 (too small for me) from the UK that would cost about 100 usd above msrp to import. If you don't care about the exact logo accuracy, they're widely available.
Conversely, every store I called--and I called several--was entirely sold out of the trailblazer. They were discontinued for a while and are now on backorder, with most pairs expected to restock summer, but irish setter apparently already has over 700 pairs on backorder. I may have a hookup on a pair in my size secondhand, from Asia of all places, I just don't know if it's worth pursuing vs just getting the elk trackers and calling it a day. I've tagged Cynthia a couple times now to ask if she can share the exact boot model (and been promptly ignored), but in the podcast she only mentions Irish Setter as a brand, and never names either boot explicitly, so I'm definitely struggling to narrow it down here.