I think if you want people to think about the meta-level, you would be better off with a post that says “suppose you have an argument for abortion” or “suppose you believe this simple argument X for abortion is correct” (where X is obviously a strawman, and raised as a hypothetical), and asks “what ought you do based on assuming this belief is true”. There may be a less controversial topic to use in this case.
If you want to start an object level on abortion (which, if you believe this argument is true, it seems you ought to), it might be helpful to circulate the article you want to use to start the discussion to a few EAs with varying positions on the topic before posting for feedback, because it is on a topic likely to trigger political buttons.
I think if you want people to think about the meta-level, you would be better off with a post that says “suppose you have an argument for abortion” or “suppose you believe this simple argument X for abortion is correct” (where X is obviously a strawman, and raised as a hypothetical), and asks “what ought you do based on assuming this belief is true”. There may be a less controversial topic to use in this case.
If you want to start an object level on abortion (which, if you believe this argument is true, it seems you ought to), it might be helpful to circulate the article you want to use to start the discussion to a few EAs with varying positions on the topic before posting for feedback, because it is on a topic likely to trigger political buttons.