The article is BS, they are not the prefered (squatty) toilet they are just based on a cheap old design that replicates smeg in the rice paddie.
Go anywhere in SE Asia that is new (and I have lived in apartments in SE Asia and India and Middle East) and typically they don't install these types of toilets any more. Spent 13mth in India, used a sqatty once or twice, once in Oman in a park (they are backward). Even Indian trains in the back blocks have one of each and a amusment park I took my kid to again in back blocks off India and far away from Tourist route had both a western and squatty toilet in males.
If you move to Australia, I don't see why Australian business needs to install both dunnies. By the time they have got to work they had had to have had a few smeg and hopefully worked it out. Yes here at my work in Dubai we have have signs on the back of the toilet doors to say don't squat on the (western style) toilet. But thats because we are dragging out labourers from the rice paddies of India and Phillipines. These same people in general won't get work in Australia as they are not qualified to meet the high criteria required for a work Visa. If I have to train someone to use a western toillet, then perhaps the best thing to do is call it quits now and drop them off at the airport.
Of note, I was recently in Paris Disney if I recall and a group of Indian's came into the toilet and just stood there until the older guy of the group looked like he escorted them to the cubical. I mentioned this to my wife and wondered how the hell can someone from India who has not been exposed to a western toilet afford to go to Euro Disney?
However what is cilvilised is the hose. Indian's and Arab's like to hose the whole bloody cubical, but in a trained hand and used by someone not expecting some else to mop the toilet after they have left. It does make for easier cleaning up when used with toilet paper (not left hand like SE Asia/India).
I would suggest this "professor" (used lightly) focus on what he's paid to do.