Those are links to Dear Joan columns and the Seattle PU that don't apply to my septic system that is large enough and capable of handling this. Water from my toilets goes through a home recycling system. Pregnant women who drink water at my house are not susceptible to toxoplasmosis.
People didn't invent cats, who have been self-burying their feces for a long time. Seattle and the municipalities in your links may not be configured to handle cats, but people have known how to compost cat feces for a long time without withering the vegetables and poisoning pregnant women.
I did not know this as a potential risk of flushing cat feces in the toilet. But it also seems that cats defecating outside is likely a more significant contributor to Toxoplasmosis in wildlife.
People didn't invent cats, who have been self-burying their feces for a long time. Seattle and the municipalities in your links may not be configured to handle cats, but people have known how to compost cat feces for a long time without withering the vegetables and poisoning pregnant women.