I can certainly reference a family that refused to toilet train their child due to laziness. I can go even better and quote 3.
"If you want to toilet train her you can but I'm not"
"My others were trained at this point but I just couldn't be arsed this time around"
"I know he should be toilet trained but I'm too busy and just can't face it"
Add it this the number who don't want to deal with 'the mess'.
"Ugh I can't deal with piss all over"
"I don't want to yet they'll make a mess"
"The idea of him having wet clothes is horrible. I'd be embarrassed if he wet himself when we were out".
Also those referencing a delay in diagnosis. The article even says 'on the pathway' not not a diagnosis. It's rare to be diagnosed so you. When a I speak to a parent about this the first question I ask is 'do you have any concerns about development/any medical issues'. If yes then we begin to put support in place. All of the above comments were made by families with no developmental concerns.