I'm pretty sure its a joke. It's based on the thinking that "the government" is trying to remove all our pleasure of life, such as smoking, eating meat and drinking. The joke is to compare the pleasure of sitting on the toilet with these vices.
I wonder why that attitude changed…oh yeah, I remember now…it’s when our public health authorities started making decisions based on political tribalism instead of trying to actually protect people in the one moment in modern times when they they should have shined for us.
You don’t get to fail that bigly and retain your reputation.
given the stunning regularity of pro-bidet discussions on reddit and HN, I'm wouldn't be surprised if Big Bidet is a thing and is pushing aggressively via online marketing