Do you tell your parents?

I can tell that my pdd comes mostly from my parents treatment of me as a kid. They were never neglectful but did hold unrealistic expectations, depend on me for housework and childcare for younger siblings, and were emotionally insensitive. From the outside looking in everything looks fine but i think they both struggle with their own untreated mental illness or substance dependence. Everything i have read about the dominant other concept has literally given me chills as i recall memories growing up feeling like i was walking on eggshells all the time and not feeling happy with myself unless i had their approval.

My question is, how do I as an adult child living on my own talk to my parents about this? My siblings are in 7&9th grades still living with them and i dont know if there is something I can do to help them not end up like me.