Now, Launderess...
I agree, it is gross, just just because her (synthetic) undies are so fetid.
Powdered laundry detergent is very alkaline, just as much as dishwasher detergent. Modern US powders are mostly sodium carbonate (washing soda or soda ash) which has a pH of about 10.
STPP is milder, with a pH of about 9. Plus it buffers the alkalinity.
Most powders also contain about 10% sodium silicate, which is even more alkaline that washing soda, but since the amount is relatively small it doesn't affect things all that much.
Her homemade laundry detergent, Fels Naptha, washing soda, and Borax (not "BorOx", lol) seems like a fairly common mixture that housewives used to use back in the wringer washer days, no? The Borax is a good thing, since it does help prevent some precipitate/soap scum.
The worst thing this gal does is use that soap mixture with cold water. Yeech. No wonder her undies get so dingy and stinky.
I got pretty good results just grating Ivory soap and using it about 50/50 with STPP (with 10% sodium silicate). Even in a front loader. But I always used hot water with it. It left bath towels clean and soft and nice smelling. But I did notice that when I used it for whites, they gradually got more and more yellowed. So I switched back to Sears Ultra Plus with STPP. No more yellowing.
I'm not so outraged by her use of a spoon... it's just silly. Like Louis says, what's the agitator for anyway? Reminds me again of early washing days, when various plunger type hand implements were used in a bucket to "spoon" the laundry.
I will say one thing: at least this gal is trying. Most I've seen just toss in too little of the cheapest possible detergent, over stuff the washer, set it on cold, slam the lid down, and walk away.