This is not, by any means, a new thing.  Surprisingly enough, legendary jazz bassist and bandleader Charles Mingus wrote extensively on the subject: http://www.mingusmingusmingus.com/Mingus/cat_training.html Oh, and his cat was called ‘Nightlife’ – how effing cool is that?

I had a cat that spontaneously used a toilet when her path to the shitbox was blocked. She only did it once, luckily when I had another witness.

That's actually bad for your cat. The article really only discusses the inconveniences for people, but that is an unnatural position for the cats which can cause hemorrhoids or UTIs, and it also goes against a cat's instinct to bury which may cause damage elsewhere such as the bathroom rug, walls or shower curtain nearby.

There is no way Jack's cat's legs are strong enough to get its massive body up onto a toilet