OK, I hope my question doesn’t get misunderstood, I can see how that could happen.
Just a product of overthinking.
Idea is that we can live fairly easily even with some diseases/disorders which could be-life threatening. Many of these are hereditary.
Since modern medicine increases our survival capabilities, the “weaker” individuals can also survive and have offsprings that could potentially inherit these weaknesses, and as this continues it could perhaps leave nearly all people suffering from such conditions further into future.
Does that sound like a realistic scenario? (Assuming we don’t destroy ourselves along with the environment first…)
They never said nor implied that
This part made me think OP was implying that they shouldn’t breed if they have a physical ailment, or disability:
Weaker is in quotes, which suggests to me they don’t mean weaker, just those carrying potentially deleterious traits. Plus, if those people are reproducing, those traits can’t be that bad anyway.