Downvoting to save words in your reply - nice. Have another upvote.
Your most recent reply actually conveys meaning/makes a specific versus broad point. To that point, I don't necessarily think they were making a eugenics based argument (though I would agree with you in dismissing an argument based on that) since they didn't explicitly state the reason for mentioning the movie was because they believe in some idea of politics being genetic versus simply being most effectively passed down via social means from one's parents while living with them through adolescence. Call me crazy, but I think most of the folks posting here should be given the benefit of not assuming they're talking about eugenics until they are explicitly promoting it versus something more widely accepted, such as the aforementioned idea that it's highly likely that parents pass down their politics through social means to their children. I could, of course, be wrong and maybe they were intending to make a eugenics based argument, but they weren't specific enough to divine that. All of that said, I should edit the phrasing in a sarcastic comment I made elsewhere about removing oneself from the gene pool being a bad strategy since I probably wasn't clear enough to get across that I was using the very real right-wing perspective where they favor their "good genes" over others' "genes" for added effect.
Your initial (decidedly vague) comment, as quoted, presents a false choice as if the person you were replying to was worrying about a future problem that is totally disconnected from the current topic of discussion, but they're not and I don't think the person you were replying to gave any reason for one to infer that they were ignoring the current issue in favor of some future issue. If they were talking about disconnected topics/problems then what you were saying would make more sense (or if you had been more specific, like in your followup, that would help too). It's as if the person noticed a ceiling was leaking and exclaimed to someone suggesting to just put a bucket under it "Ignoring a leak is exactly how my neighbor ended up needing to replace their roof, I don't think the bucket plan is a good plan in the long term!" and you were there to reply "Don't tell them to worry about the roof, they need to fix the leak!" It's not wrong, it just doesn't really say anything or lead to further thought beyond the loop and comes across as a "calm down!"
This reads like what a rooster might hear about their outtie during their Wellness visit while employed at Lumen.