“Stop denying what he wrote!”
OK, I admit, you are wrong.
You completely misunderstood his teshuva and why he mentions the sevara of chashash rachuk and its relationship to his comment shomer pesayim Hashem.
I freely admit, you have thoroughly confused me. Are you saying that Rav Moshe z’l wrote in his teshuva that smoking is an absolute issur? Are you now saying that chashash rachuk is now a heter that he is proposing to allow one to smoke? if not, please clarify this line “So if it’s not ????, then there is No Heter!”. What heter?
Did you or did you not put Rav Moshe on a list of those poskim who rule smoking is an absolute issur?