Yes, I agree with the above- the general lack of accuracy in the rest of the dialogue makes me think this is a just an amateur dramatic video meant to impress and not convey real facts.
About T. stirmi being larger possibly- it is quite possible that there is a larger T. stirmi compared to the T. blondi on record. I wonder if the record holder actually is a T. blondi, if anyone has gone back to check this large specimen. T. stirmi was only very very recently distinguished from T. blondi so it is quite conceivable that what was once called T. blondi was actually a stirmi anyway (or apophysis for that matter). In either case, I still believe the largest is one of the Theraphosa species.
Fran (other user here we haven't heard from in a bit) had an 11" molt from a Lasiodora parahybana, which is pretty darn impressive. And that's the molt, so the resulting spider is a little bigger.
Abraxas- how is that communal doing these days?
In your experience, from the T. stirmi specimens you've encountered, have they on average been larger than T. blondi specimens? Has anybody concretely mentioned stirmi specimens being larger than blondi specimens in their collections? I'm just very curious.
Even though T. stirmi has only been classified as it's own species in 2010, that is still about three whole years that a larger T. stirmi species could have been presented by someone as the new record holder, either by weight or leg span. However, nothing has come forward as a contender, even with the allure of an individual having a world record holder. I'm not saying it isn't possible, but that it is less likely.
Does anybody know where the record holding specimen is and who last studied it?