Why would he be helped if he truly doesn't give? He speaks about this a little:

  the person being aided can reciprocate with degrees of humility, dependency, gratitude, surprise, trust, delight, relief, and amusement

[0] Discussed more at https://news.ycombinator.com/item?id=46555688

For years and from people who have nothing to share.

It's a distinct possibility. What's more likely is that this person is an example of someone robbed of their own agency, either intentionally or not.

It leads to becoming dependent on others, a true Last Man in the original sense. That's where the resentment starts on the part of the giver, especially when enabling people such as this repeatedly and on long enough timescales.

What's become clear to me is that there isn't anything inherently wrong (morally speaking) with these people, but they need to be moved out of the way so to speak. They cannot be allowed to escape their various containment zones, and the mechanism for their containment must be strengthened.

Some would call them a begpacker. It’s quite common in Asia.

Exactly.

People taking advantage of other peoples' kindness systematically and at scale is the reason why people are less kind today.

Even mentions in the article that he would be hesitant to respond the same way with his resources... that's when I stopped reading, so frankly don't know if he changed that attitude or not...

There is a view that being a kindee is generosity, because you allow other people to express kindness (and feel good about themselves?).

This was my impression as well. I'm supposed to wander around and wonder who I will leech off of today, while presenting it both a skill and to some extent as a favor to the person helping me?