We will bring a chair in the restroom for someone if they ask for one.
If anyone ever told me to breastfeed my babies in a lavatory, I suggested that they should bring their meal in there too. Once people got the visual of themselves dining in a public washroom, they stopped expecting my daughters to take their meals in the restroom.
I realize that it's a private area for people who do not wish to expose themselves in public, but good grief, it's an appalling place to feed a baby. A woman can achieve adequate coverage with a blanket or a shawl.