I love that there are people who will go into this much detail on stuff. It's really cool that they do. But the whole thing is that if you follow some sequence of steps, powder will clean as well as or better than pods for a third the cost. All right, this isn't a significant portion of my expenses so I'll pay the 3x cost since my dishes come out clean anyway. I wish the description of the video was like an abstract.
My kids would routinely put in too much powder, which would gunk up the dispensing mechanism, requiring my time and effort to clean it out and fix it. Eventually the dispenser broke entirely and had to be replaced. We since switched to pods and haven't had any problems with the dispenser. The pods are worth every extra cent.
I (as is common for many middle-class South Africans) have a domestic worker who cleans the house, and in general you just have to accept that domestic workers will tend to use quite a bit more cleaning products than is necessary. At least with tablets, they will always use a set amount.
It's not their money that they're needlessly wasting and the thing not being clean is a more immediately noticeable problem with their work than you finding you're spending a lot more than usual on cleaning products.
It also wouldn't work to try give them a budget on cleaning products as then you're encouraging them to skimp on using enough so they get more money in their pocket.
Although our domestic worker is a lovely person who I help out as much as I can, at the end of the day she has limited skills and education, so can't demand very much of a salary, hence why she and many others in her position is a domestic worker.
When you're the one who does all the cleaning yourself and pay for the products you use, you'll try find the amount to use that definitely gets the job done, but isn't needlessly wasteful.
I also like the convenience of the tablets, you don't have to think about the amount or possibly making a mess or pouring too much powder in, etc.