I was told many times by elder "former" friends to count my time when I helped my mom or other needy ones in the hall. It was for them to show more hours and so my low D2D hours wouldn't reflect poorly on me or the congregation, and bring down the congregation average. I never did it though.
I'm still amazed at the cart witnessing. But it makes sense. And I've heard the same thing, those that qualify to get a cart are thrilled with this easy time reporting. There was a couple outside a Trader Joe's. They were sitting on their electric wheel chairs next to the trolleys having the time of their lives.