That “slippery slope” is absolutely vital to slither down if you want to formulate public policy.
If you don’t understand why people mistrust “big pharma” or “big government” or “big [sobriquet]” and reflexively dismiss anything that involves them, you cannot formulate public policy that will be effective.
Very rarely do people say “I’m going to dismiss centuries of scientific progress for this quack cure” without a reason. It’s maybe not a reason you agree with. It’s maybe not a reason reality agrees with. But you know what it might be? It might be a reason that traces back to how “big [sobriquet]” has acted toward such people in the past, often persistently over a long period of time, that has led to that breakdown in trust. In short: you (as in the beneficiaries of the status quo and “big [sobriquet]”, directly or indirectly) may be at least partially historically culpable in the opposition you now face.
Now I get it: accepting that you yourself are partially culpable for “irrational” opposition is a bitter elixir to swallow, but if you don’t take that first step toward understanding, you can’t take the second step to correcting the problem. And the problem will continue to fester and take root until, oh, I don’t know, something utterly fucking insane happens and a million of your fellow citizens die in a public health disaster because half your population doesn’t trust the very institutions that were needed to prevent said disaster.
So maybe you should learn to enjoy sliding down slippery slopes. Or, you know, die in the next easily-preventable pandemic. Like a million of your fellow citizens (assuming you’re American: insert your own numbers for your own country if not) did in the current one.