I haven't read the full thread but people can be terribly precious, or at least want strangers on a forum to think they are.
A few anomalies jump out.
Pet bowls in the dishwasher doesn't bother me. Less potential cross contamination than hand washing them with presumably a dish brush or similar that then might be used for something else? Or do you bleach them then boil the bleach then torch it all with a flame thrower or something? Anyway the dishwasher gets to 100 degrees whereas my tap doesn't so it's a bit of a no brainer.
I don't wee in the shower as my routine is to wee first thing and then get in the shower, but it should be noted that urine is sterile and therefore contains less microbes than the water that washes it away that has flowed via your skin which has hundreds of millions of bacteria on it.
Towels - obviously a clean one each day is the most hygienic, but there ought to be a cost benefit analysis of that vs the environment, your time, and your water and electric bill. A few days seems a good compromise to me, and I make sure I hang it up to dry properly, but each to their own.
Ditto bedding. Add to the frequency equation summer vs winter, sleeping naked vs head to toe pjs, your time and how you like to spend it, vs the utter joy of crisp clean sheets and I tend to average around weekly or thereabouts.
Things that make me irrationally grossed out which probably don't phase others:
Days old leftovers -I just can't
Bin juice - doesn't happen anymore as all food waste goes down the waste disposal but yuck. And that horrible banana skin and coffee ground aroma of food waste bins is why I have an insinkerator, but big respect to those with successful compost piles, I salute you and so does the environment.