It's not really a blurry line. "They" could require you to take antipsychotic pills when you renew your driver license. "They" could chemically castrate you when you register to vote and select the wrong party affiliation. But they can't, because in the US patients can refuse treatment.
Panicking about new treatments because "they" might someday bundle them with other treatments isn't particularly effective, because you can just decline the treatments you don't want. The days of no-oversight asshole doctors drilling holes in people for being weird are conscripted to the past. If patient rights to refuse treatment are destroyed, then sure, freak out all you want.
Meanwhile, research is not a zero-sum game. Treatments and prevention can be, and are, worked on in parallel, often by people with wildly different research backgrounds. Specifically, the resources and personnel involved are not fungible. Discouraging field A because you'd rather have someone work on field B doesn't necessarily mean anyone will work on field B, it just guarantees you don't make progress in field A.
Panicking about new treatments because "they" might someday bundle them with other treatments isn't particularly effective, because you can just decline the treatments you don't want. The days of no-oversight asshole doctors drilling holes in people for being weird are conscripted to the past. If patient rights to refuse treatment are destroyed, then sure, freak out all you want.
Meanwhile, research is not a zero-sum game. Treatments and prevention can be, and are, worked on in parallel, often by people with wildly different research backgrounds. Specifically, the resources and personnel involved are not fungible. Discouraging field A because you'd rather have someone work on field B doesn't necessarily mean anyone will work on field B, it just guarantees you don't make progress in field A.