"But if anyone considers themself a true Christian, they will stil try to help these elderly people, and might even lead them to the true understanding of the two main commandments, to love the Lord out God, and to love our neighbour as ourselves."
I understand the compulsion towards compassion. The trouble with looking after destitute JWs, who spent their lives denigrating and demonising your church, which actually does have a charitable arm, is that there is a chance that you reinforce the WT arrogance. Instead of being grateful for kindness extended by people whom they have been always taught to hate, the risk is them telling each other: "Hey look, I'm living on dumb Christendom's dime; I'm plundering Satan's kingdom!"
It's a very fine line and a hard road to tread. No-one wants to see people struggle in their old age, even if the struggle is self-inflicted. It just feels like a kick in the guts when someone brags about "Jehovah™"* providing, when it's really Vinnie's** or Anglicare or the Salvation Army.
* A scribal error by a 13th century Catholic monk
** The Society of St Vincent de Paul (Catholic)