Do vegans not need to use dish soap?

I tried asking in foodsafety subs but got auto banned lol. I am just curious since A) we don't eat animal products which commonly have salmonella etc, and B) They don't recommend to use soap to wash lettuce which can carry salmonella.

I personally haven't used soap for dishes in over 10 years, and haven't got sick once. perhaps im just lucky or is soap a scam?