Source? I’ve never heard this before.
...unless they aren't telling us something...Reading through that earlier, I laughed when they said some species can get up to a foot long
You mean to tell me that people who say there are no spiders with a foot leg span have been lying this whole time? Last time I turn to Arachnoboards for advice*...
? 
White paper citation required here. Rechecking the most up to date sources I have does not list any heteropodidae as medically significant. However, one of their native habitats, open sewers in third world countries, list them as problematic in that they can transmit numerous human hazardous pathogens.
Good references! I've been hearing it both ways and the jury is still out. Lots of convincing arguments on both sides. Throwing all the egghead noise into the corner and examining the practical from a boots on the ground point of view, my guess is the spider MAY be a vector under certain circumstances. But logistics enters into this. The skin is compromised by a bite and an infection developes. Was the infection from the spider, it's glands being a host to the organism, the organism simply present on the chelicerae, the organism on the spider in general, or the organism simple present in abundance in the environment?
That video reminds me of hill tribe kids playing with nature's race machines. Sometimes they would draw a large circle in the dirt and each would release their spider in the center, seeing which would cross the circle first.
I believe I came across the information online a few years ago but I can't remember which website it was. It featured a photo of this particular huntsman species from WA and it looked quite different to the huntsmans that I'm used to seeing. They'd also given it a common name though I can't recall what that was.
Social Huntsman (Delena Cancerides). According to minibeast's spidentify app this behavior is apparently well known among them (as in, groups of several hundred specimens). If seen a handful of them over the years but never in groups numbering more than 5 or 6