Bruce Lee may have been a strong and fast fighter, but he is always about the show. The techniques here are half complete because they assume everyone to be a competent fighter when defending themselves. The reality is much muckier and organic. The tit-for-tat instructions are ridiculous and once again only emphasize Lee's abilities and showmanship. There are more effective ways to defend against the demonstrated attacks, and they don't always have to do with hurting the other person. It is also possible to defend oneself with the aim of controlling the situation (and the assailant) rather than jabbing an assailants eyes. Such extreme counterattacks should only be a last resort. Otherwise what makes the defender any better than the assailant?
And stepping out of a weapon's reach is horrible advice. When someone has a weapon you sidestep and rush into the assailant's attack zone. You don't step out of reach and grab and kick... You go in, protecting your flank and striking your opponent's centerline. You keep the assailant in check by controlling the weapon arm and disrupting the balance.