Originally posted by ivanhoe
What are those dogmatic claims which makes a "dogmatic Catholic" ill equipped to make "moral deliberations" ?
There are any number of them. Where would you like to start?
How about the Church's position on divorce, for example. The church holds that it is morally correct and preferable for a couple to endure a marriage of mutual suffering until death parts them rather than divorce and pursue more promising avenues of happiness and fulfillment.
Or perhaps we could start with the Church's position on homosexuality, holding that it is morally correct to not acknowledge the full personhood of homosexuals, that it is morally correct for them to refrain for all of life from acting upon their natural sexual inclinations.
Or there's always the old favorite: the Church's mysogyny. It holds that it is morally correct to decline women employment in various roles simply in virtue of their gender. It holds that it is morally correct to force a woman to bear a child after she has been forcibly impregnated against her will.
Or we could begin with the Church's stance on euthanasia, holding that it is morally correct to prevent a person's wishes to end a terminal illness of extreme suffering from being carried out.
Or how about the Church's racism, teaching that some people are "God's chosen" merely in virtue of their race.
Given all of these morally incorrect premises that a dogmatic Catholic would adhere to, and given that one cannot deliberate soundly from incorrect premises, it should be perfectly obvious that Catholic dogma seriously cripples a person's capacity for correct moral deliberation. The empirical evidence consists in the fact that dogmatic Catholics actually do think that all of the above are morally correct positions (and act and impose their beliefs accordingly), when in fact all of the above are morally reprehensible.