Unlocking starter decks?

New to this game and was curious if something changed with how you do this since the older posts a couple years ago.

Following the instructions of choosing the different campaign, earning some points and redeeming them only seems to unlock the basic warlord with none of their cards unless you buy premium for 20 bucks.

It was explained from multiple sources before that you could easily unlock the basic starter decks like this for free. Did that change?

Apologies if this has already been addressed somewhere. I could not find anything.

Example: I got Kaphrael and that's it