Yup, you sound like a hoarder to me. I am and we have a lot of the same behaviors.
I had a really strong reaction to the article you posted. I couldn't even finish it. It was accusatory and judgmental and practically guarantees to make a hard core hoarder defensive.
Hoarding is a mental illness. It can be genetic, or caused by a trauma. A sin is voluntary. A hoarder doesn't choose to be that way. We are not slothful. We are not evil. We are in a situation out of our control, not lazy. We can tell ourselves all these negative things all by ourselves, our families and strangers will be more than happy to point out your faults. And if you listen to them, and accept their views then the situation is hopeless, because you are accepting that you are a bad person and wow, that's really going to make you shape up, right? Lack of self esteem is one of the causes, so no, that kind of input is toxic to us.
I bet you never woke up in the morning and said to yourself "What a beautiful day! I think I will spend it totally trashing my living areas and isolating myself from everyone I love. Man, I just LOVE living in filth and chaos!"
Hoarding is as real as a broken arm or a genetic defect. No one chooses to be that way. Like any addiction, we can only choose how we react to it, and the research (and my own experience) shows that it isn't something we can do alone. Yet we tend to be people who help others but can't ask for help for ourselves.
Oh and for the record? Sloths have developed a super efficient adaption to fit in a ecological niche. A sloth is slow, not lazy.