Interesting quote and certainly can apply to some people, but this behavior could also be considered as "acts of service" type of "love language". You can take any endearing and genuinely good behavior and make a toxic version out of it.

Someone who stops at road side, and helps a stranger with a tire iron, likely has no reason other than it just feels the right thing to do; the recipient's smile being the most precious payment they could possibly receive.

An extremely toxic mindset.

I thought about this without instantly rejecting outright.

I agree. I am not interested in controlling someone's thoughts or actions and I do not help.