These kits are not really aimed at the serious "I must build everything stock" set or the "I only like Brand X cars" types. They are aimed at model builders who like variety and who built them as kids, like me!
They are fun and quick builds, nothing to bury yourself too deeply in or worry about accuracy. Some may do that, but not the majority.
Not everything has to be a serious adult model, and I am glad to see them coming back!