I have said elsewhere on this forum that hifi snake oil is a relatively harmless form of snake oil. I do not see why people expand so much emotion and energy on fighting it. At worst, someone else with expandable income wastes money. They do it with full knowledge that it is expandable income. What does that have to do with you?
Compare that to more insidious forms of snake oil, especially medical snake oil. Abandon life-saving treatment for hocus-pocus like homeopathy, chiropractic, iridology, some fad diets, and not to mention plausible sounding but unproven therapy (for now) such as gene therapy, immune activation (note I am not talking about monoclonal antibodies or immunoregulators such as PD-L1 inhibitors here), and so on. Abandoning proven treatment in favour of unproven treatment will not only waste your money but can seriously damage your health or even kill you.
I am reminded of a case report of digitalis lata poisoning that I read about in a medical journal many years ago. The supplement contained extract of Foxglove, which contains the active ingredient Digoxin which is a well known medication for heart issues. The nett effect is to increase contractility (i.e. how vigorously your heart pumps) whilst slowing the heart rate, and can be used as a treatment for heart failure. However, Foxglove is like any other plant. The concentration of active ingredient depends on the season you harvest, which parts of the plant are used, whether the plant had full sun or shade, what the soil drainage was like, and so on. These concepts are familiar to anybody who has tried to grow their own fruits and vegetables - as a (very) small scale farmer myself, I know that tomatoes that face the sun are sweeter than tomatoes that don't. If your manufacturing process only specifies say "20% Foxglove", you are not actually specifying the amount of active ingredient that goes into your pill. I don't know about you, but if I ingest a tablet that says "Digoxin 62.5mcg" I would rather have the assurance that I am actually ingesting a controlled dosage of the ingredient, which comes with regulatory controls and punitive fines if subsequent tests show that the amount of Digoxin is not in fact 62.5mcg. As opposed to "20% Foxglove" which may contain varying amount of the active ingredient depending on growing, harvest, and processing conditions. As it turns out, the case report showed an unexpectedly high concentration of Digoxin way and over the almost homeopathic dose normally offered in the pill.
So: it is not as if medical snake oil does not work. Sometimes it does, but in a fortuitious, unpredictable, and uncontrolled manner - simply because conventional drugs are included, unadvertised, and sold to people who lack the training to know better.
Ingestion of these substances can hurt or even kill you, yet the supplement business is worth billions of dollars, and I am sure it dwarves the hifi snake oil business by several orders of magnitude. Yet you folk carry on about hifi snake oil as if it's the most evil thing on Earth. IT IS NOT.