That was tried, in various forms already. Now I let you guess by whom.
Honestly, people in Germany are freaking out because the AfD won the county equivalent of a mayors election for the first time. In Germany's second smallest county (it is a Landkries, a county is as close a thing as possible). What bothers me much, much more is to see all this Nazi-eugenics derived ideas slowly but surely finding their way again into mainstream discours. Freaking scary actually.
TIL this sort of derailing of a conversation is called 'concern trolling':
Concern trolling is a manipulative tactic where an individual pretends to be genuinely concerned about a particular issue or cause, but their real intention is to derail the conversation and discredit the opposing viewpoint. In the example you provided, person B is attempting to associate the contentious idea with Nazi thought in order to make anyone who opposes or questions the idea appear sympathetic to Nazis.
Honestly, people in Germany are freaking out because the AfD won the county equivalent of a mayors election for the first time. In Germany's second smallest county (it is a Landkries, a county is as close a thing as possible). What bothers me much, much more is to see all this Nazi-eugenics derived ideas slowly but surely finding their way again into mainstream discours. Freaking scary actually.