"But muh disability", the service worked with them for 3 years trying to make the dog healthier, instead the poor thing got fatter and developed stress injuries

This is so true. I get the sense that a lot of human rights complaints nowadays are vexatious or inappropriate (many by COVIDiots), which only makes it harder for the legitimate complaints to be taken seriously and heard in a timely manner. Another reason for so many human rights complaints is that it doesn't cost anything to make a human rights complaint in my province, whereas it does cost money to start a lawsuit and the plaintiff can be on the hook for costs if the lawsuit is without merit. It is unfortunate when people take advantage of a valuable mechanism like the human rights tribunal for the wrong reasons.