People's bodily autonomy being taken away is what we are talking about, regarding the original thread and the removal of abortion rights.
Many men in my life and around the world demonstrate the point that they only care once they have a daughter, including the comment I responded to. Directly contextualising it around his daughter but not his wife, or his mother or his sister? I also take great issue with placing the onus on women to 'wake up', when they are generally much more cognisant of the issues that affect them, and it is the responsibility of men to also take a moral stance, and not continue to ignore damaging policies that do not directly impact them, or worse, support them due to rising misogyny.
Personally I think 'souring the conversation' would be to complain about an obvious joke mirroring the language of the comment I replied to, to make some sort of 'not all men' plea, in a thread about a prominent politician with a wide base of support from young men moving towards an anti-abortion position.