Maybe you have too much spare time? And what dark obsession makes you to surf that places?
But i will enlighten you. As far as i can.
Fact is, we have both toilet models in use here in germany. In my flat, we have both models. Of course, in different toiletrooms.
Another fact is: the author of that report is realy stupid. He cleaned the shell manually with toilet paper.
Each toilet in germany, no matter what shape, has a special toilet brush to clean the toilet after use. Maybe the author didnt notice that. Or even worse, he used the brush to wipe his bellybutton and used the paper to clean the shell.
In that report, i never read something about any brush.
I guess the author is canadian. So it might be that canadians never use any brush to clean their toilets after heavy use? Brrrr!!
I hope i never will be forced to make my 'duty' in an canadian high tech toilet.
I found a site where you can see how to use a toilet brush and how NOT to use it. Sorrily its in german, but watch the pix carefully and you understand.
Look here you brushless dolts Ecke