I have to say that our congregation does take care of older/sick ones - it is one of things that makes being in it bearable. The WTS itself? Worse than useless!
But here's a true story from when I was reaching the end of my eldership. We had (thankfully moved on now) an uber pioneer who was mega keen in the circuit and she would pal up with the CO's wife (who was a ministry nut) on a Monday afternoon once a month to go on the ministry outside of the CO's visit so that the CO's wife could have her "own" calls in the city that she could follow up.
Anyway, they used to meet at an old disabled sister's house who was in our territory and this sister had no sense of smell plus a smelly dog and a house that still stank of her dead husband's smoking habit from months previously before he died. So the CO's wife says to our uber pioneer that the place is "not suitable" for a meeting for field service and the uber pioneer relays this to me and says we (our congregation) should get a group together and clean the house.
I tell her that I am in no way going to upset this sister so soon after her hubby's death to tell her her house smells etc. So uber pioneer says that it's not suitable to meet in because the CO's wife says so. I'm in the parking lot and say loudly "if sister (CO's wife) has got so much time on her hands then why don't you and her offer to clean it instead of making a fuss about nothing?"
Anyway this gets reported back to the CO who phones our then PO (a long term heavy with bethel connections) to express his disapproval at me and that the elders should do something about it. In fairness to the PO he backed me up and said this wasn't the right time to broach the subject with the sister being newly a widow and all. The CO tells the PO that I need counselling but the PO again stood up for me and said to the CO that under the guidelines of Matt 18 then he (the CO) would have to approach me directly! He never did, but would never look me in the eye.
Funnily enough our PO who was "always" on the circuit assembly platform didn't get another assignment while that CO was in town!