OK, maybe some words need to be expanded on.... I should have done this sooner, and indeed had it written, but decided not to post it.
There is laundry DETERGENT vs laundry SOAP. They are very different substances. One cleans but doesn't do all of the things that modern science can do, such as brightening and whitening. Bright and white does not mean clean. My shop towels are NOT bright and white, but they are definitely clean, as are our clothes.
Detergents are not the same as soaps and don't make the cloth entrusted to them finish the same. They are known to have brighteners and whiteners which soaps and such don't contain. But detergents can have negative consequences for some folks that soaps and such might not. Most detergents are synthetic and most soaps are "natural" more or less. I'm not stating that one is better than another, just that they have their own characteristics. YMMV.
But one must understand the difference between clean, and bright and white. They are very different things.
FWIW, soaps can be used with bleaches and bluing and brighteners to mimic what detergent blends do, but it's more work. Frankly folks today want none of that, so the detergents command the majority of the laundry cleaning business. Yeah, we're aware of that. I still choose soap and borax and washing soda for my own reasons. In fact I chose soap for our laundry after many years of using really good detergent. I still use detergent once in awhile to bring the fabrics back to bright and white.
One can be selective in ones choice of cleaning chemicals and not blindly use one over another exclusively and think that's the end of it. It all winds up in the environment and we all live with the consequences after that.
Personally I dump my cleaning chemicals into my septic system and into my land, so I have a personal responsibility to myself and those who come after to not poison them. Don't make religion of this. It's just a responsibility I feel for what I've been entrusted with. It's much easier to use whatever if one puts it in a pipe that others need to take care of. Except much of what's "flushed" is never taken care of, it' just a can kicked down the road.
Read nothing more into what I've written other than personal responsibility. Read any more into it than that and I guarantee you that you would be absolutely wrong. I am no tree hugger but I understand my role as a steward.
Brian. Lover of SE razors.