Dyeing leather is NOT painting leather.Because all car leather interiors are basically dyed(painted) does the conditioner actually soak in? I think its mainly a topical coating... so its important to protect the interior from environmental damage...sun, dirt/dust, etc. Basically the leather conditioners enhances the dyed interior,almost like wax shines your paint. As long as you treat regularly to minimize damage... the chemical guys or Zaino or other coatings work well. Just my 2 cents.
Probably bcuz they cant promote any one brand.The tag that came with the seat's said to use mild soap and a damp cloth.