No, actually, these are good alternatives to the antibiotics that affect humans which, because of involuntary overuse through diet, have created a class of resistant bugs.
I’m not a nature freak, but a lot of herbs are extremely effective in disinfecting and purifying, and actually used to be used in chicken coops, barns, etc.
The problem with DDT was that, first of all, it was junk science and DDT was not responsible for what they claimed, and secondly, that they had no effective substitute.
Also, it wasn’t harmful to human beings, within reason. As a child, I was one of the many who ran behind the DDT trucks, inhaling deeply because for some reason children like the smell, and many decades later, I’m still alive to tell about it...
The oregano and thyme are publicity gimmicks.
Big time sanitation is their key.