If you ever do use Blender to make your own figures, you'll understand that it's not the "they got you approach" that is causing your frustration.

It's that this is really complicated, and there are technical limitations. Different designers have different solutions to these technical limitations, and there's no real consensus on which is best. (The arguments about JCMs, etc., can go on forever.) If you're used to the way one figure works, there will be a learning curve when using another one.

Dawn does come with some morphs built in. And some you have to inject. There also additional morph packs sold separately. That is normal. La Femme probably has more morphs included than most, but she was also released with a separate morph pack that cost money. Third party vendors often make even more morph packs available.

It makes sense to sell them separately, IMO. Not everyone wants all the morphs, and if they're built in it makes the figure very resource-heavy. (That's why they're often injected, rather than included in the figure when loaded.)