If you read the article on an non individual scale then it makes sense. It is not saying you have a pet therefore you are a bad person, but there is more going on here that deserves looking at. My take on it is that it has gone away from being domesticated by dogs, or the other way around we aren’t quite sure, to the benefit of both to most of the benefit being for the human. There are plenty of exceptions, but there any many times that people get a pet to help with something missing in their lives that potentially used to be filled with people.
As a highly social species when we stop living in social groups and become isolated then pets have often filled the gap. If the level of pet ownership has increased so much then it is good to ask the question about how we are functioning and why people get pets.
As usual people have taken the article personally rather than looking at the population level question being raised and critically analysing their own situation in light of the different perspective.
For full disclosure I keep chickens, that mostly feed themselves and I provide some shelter (when they deign to use it). The local fox takes a few occasionally and I get a few eggs. I also used to have rabbits when my oldest had mental health issues, but as they got better we both felt they were not getting the life and attention we wanted for them, so they now have a large garden to roam in and two more children looking out for them.