I interpret your meaning here to be something like:
‘Conscious affirmation work has nothing to do with attempting to directly (or maybe, ‘acutely’) influence or impact the deeper mind’.
This stuff is all on a spectrum. And, we can recognize that we’re all immersed in some form of affirmation or self-talk on a daily basis, simply by virtue of what we pay attention to and involve ourselves in.
So that’s kind of how i see it.
You’re going to be doing affirmations anyway. Every day when you make statements that involve emotional intention or force of will, you are already making affirmations. Not in some conspiracy-filled kind of way. Just naturally.
If I wear narrow, poor-fitting shoes each day, then I am, whether I think about it or not, very effectively cultivating corns and calluses. And gradually and ultimately, without the use of scalpels or surgeons, those changes are going to impact even the deepest parts of my physical body.
It’s natural.
Anyway, blah, blah, blah. You didn’t ask for philosophy.
Let’s go back to your original question:
They can help.
They’re not necessary.
It’s up to your preference.