true prevention is better than cure. but when dealing with such dangerous materials, there must be a safety net. sh*t happens sometimes that is beyond ones control.
Vinegar doesn't really "BURN" flesh wounds although it does sting a little, and I don't think Cap ever endorsed it for HCl or H2SO4.
Having said all that, I never knew that NaHCO3 would lower the pH of strong alkaline solutions so I guess I could see the benifit of having it around although I'll stick to using vinegar until it's proven that NaHCO3 does a better job.
I would like to add here that protective gear like long gloves, goggles/face shield, etc is more important. Prevention rather than cure.
EDIT: Missed that post above. Looks promising.
and i am just assuming that there are people out there who don't follow the teks word for word or think they remember what to do. you know.... like quickly adding NaOH crystal to the bottle with the solution from the A/B? imagine the volcano eruption that would cause... to the roof, i tell you.
having the safety net will not stop people from making stupid mistakes, but it will help them resolve it as quickly as possible if it does happen.