Iāve also heard Abhidhamma teachers say that samatha is impossible And yet somehow people get enlightened anyway!
So, in my opinion, just ignore the haters and focus on what you can feel: the breath, the body, sensations, etc. Eventually, if your samÄdhi gets good enough, youāll start to perceive the more subtle workings of consciousness for yourself.
At that point, thinking āwas that bhavanga?ā will just be a hindrance. So, if you have to label those feeings when you get there, āpleasant,ā āpainful,ā or āneutralā will suffice, as the satipaį¹į¹hÄna sutta recommends.
Namely, when bhavanga is seen and recognized, itās felt as a kind of terrifying, existential feeling (āknowledge and vision of the way things areā) which eventually (if you keep going) will drive the mind towards revulsion, dispassion, letting go and release from the viƱƱana cycle.
Then, once youāre enlightened, there will be plenty of time (and personal experience!) to geek out on the Abhidhamma! Until then, my opinion is to stick to the suttas and whatever meditation objects you can feel
Like (personal confession time), I have never been able to identify the 7 enlightenment factors in my own mind. Perhaps because I donāt have any of them Or perhaps because I am still not confident I can identify them accurately. For whatever reason, mindfulness of the enlightenment factors has yet to be a useful satipaį¹į¹hÄna for me. Thankfully there are plenty of others, such as mindfulness of the bodily postures or of the five hindrances, which I can confidently identify as they happen. So I just stick to those and if ever I get a good sense of the enlightenment factors (and get any of them!) then maybe Iāll be mindful of themā¦ but until thenā¦ āsitting, typing, ā¦ā Hope that helps