If you have severe arachnophobia then don't watch this.
The point of the video is that he wants to prove that these spiders are non-aggressive. They only bite when they feel threatened or are being put in pain. Bites often happen when people accidentally grab on to one and put pressure on them. The bite they give humans is a warning bite as well which means they don't even fully release their venom, only some of it. He also states that no one in the last 10 years has died from a widow bite.
The point of the video is that he wants to prove that these spiders are non-aggressive. They only bite when they feel threatened or are being put in pain. Bites often happen when people accidentally grab on to one and put pressure on them. The bite they give humans is a warning bite as well which means they don't even fully release their venom, only some of it. He also states that no one in the last 10 years has died from a widow bite.