I think OB feels that we Israelis (or at least the state of Israel) should act more responsibly vis-a-vis our once erstwhile ally in southern Lebanon. While I agree in principle, I personally think she overstates her case, especially mixing up realpolitik politics with humanity (taking care of friends etc), and possibly ethnic affiliation.
The Wiki is based on what data? How many SLA soldiers do you know? You are aware that most of the villages down there were Shia in the last 20 years. The Christians packed up and left. The Palestinians raided the Christians and Shia alike in the 70s. That is why Amal fought against Arafat for a period. There were, as you know, stronger magnets for Christians (esp Maronites) to join than the SLA. The secularized anti Mullah Shia were left between a rock and a hard place.
And while I do see that as a generally unreported tragedy (it has been reported and well understood in Israel, probably in Lebanon too but not outside our region), I don't think however that we (as Israel) should be responsible to free the Shia in the area (maybe not even the Christians or Druse who don't come half way to meet us at least)... which is what the SLA was tantamount to. They were a Lebanese secular party. They had families they hated what was happening in the south of Leb, and they had allies among the Christians. They believed in the old Lebanon.
Some of these people are salt of the earth but please have no allusions- there were many traitors. Most of whom never made the press. We lost a lot of ground due to the numerous betrayals, in the passing of information. Iranian intelligence is sharp, they used what ever they could- money or threats or both. And please do your own research, most were not Christian. Thats just a known thing. I think you are speaking very academically, without much research.