PETA states that the drive towards no-kill shelters is resulting in more cat hoarders operating. Cat hoarders often present themselves as cat rescuers on social media. The picture shows one cat in a cage without food and water who was rescued from a cat hoarding situation.
On a separate matter, the Covid-19 pandemic is resulting in more feral cats because spaying and neutering discount services appear to have been discontinued in many places. It naturally follows from that that there will be more cats procreating to which you can add an increase in cats being abandoned due to financial difficulties.