Because these superficial changes are part of the package that they're selling. They've got charters (or whatever) in cities all over the world and their first product was a livery without the scheduling nonsense and with a pretty reasonable price. Telling them that the thing that they want to sell is against regulations is fine, but saying that those regulations exist strictly to protect against bad actors and that exemptions are granted for everyone else is the same as saying that you think that they are bad actors. And in that case, asking people to sign a petition saying that they're not is completely reasonable.