Well he said professional kickboxer and bjj blackbelt. He never included weapons training in the scenario but yes weapons training would have been much better.
And I don't see why some don't think BJJ is fit for self defense. I think it would do just fine, you don't have to do a flying armbar, you can always use takedowns and takedowns on concrete hurt. You don't always need to use a submission. I agree though vs multiple attackers it isn't the best choice, but you can still use its takedowns.
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