I just spoke to the feeder from yesterday. Unfortunately, it seems that she also had a complaint made against her because the HDB came to her home. She kept insisting that she can keep cats because everyone else does - this is actually such a common misconception, I can't blame her for thinking that at all.
What was more unusual was that she wanted to complain about SPCA for holding adoption drives. I've asked her to please not do so - why punish the cats plus the drives are for everyone, not just HDB residents.
One woman I spoke to wanted to complain about her neighbours with cats because SHE had been complained against. There's no point getting someone else (and their cats!) into trouble if you are.