I think it’s clear that “maximize individual freedom” is a BS marketing phrase given how much nuance you had to use when rejecting the “freedoms” I proposed.

Again, it should be strongly noted that the maximization of individual freedom does not entail that such freedoms are at the expense of another. Also the usage of the term "maximization" is intentional in that it does not describe a destination, but, instead, an aspiration, subject to the practicalities, and nonidealities of the real world. It should also be noted that you are affirming the consequent in your argument by rejecting all other examples by arguing from, most likely unintentionally, cherry picked points of contention.

No problem with coercing workers to do 80 hour weeks? I don’t think you’ve ever been in a situation where someone had that kind of power over you.

When one enters the employ of another, a contractual agreement of one's expected working conditions is signed. If one wishes to give consent that their employer has the ability to demand an 80+ hour work week, at the risk of termination, then that is their prerogative. One's ignorance of their own contractual agreements should not be my concern. Furthermore, a competitive, free-enterprise system would ensure that there is another employer available to take up that disillusioned employee. And, of course,

And selling junk but “safe” medicine is as dangerous as selling cyanide labeled as aspirin.

In what way? Also, it should be noted that selling "junk" medicine is not an immunity against independent audits on it's efficacy.

Or are you content suing the drug company after your kid’s asthma rescue inhaler was actually just full of nothing and they asphyxiate to death?

Hm, this is under the assumption that a company doesn't care about it's own longevity, nor profits. If a company falsely advertises, this is a surefire way for that company to quickly go under. Furthermore, proper tort law would assure that all those involved are held accountable for damages, and that appropriate remediation is ordered. One's ignorance in consumption really should not be the concern of another. Also, there is a 3rd possible option that wasn't mentioned in that the FDA could instead serve the role of being a certification body, rather than a regulatory body. What I mean by this is that a company could go through the motions of ensuring the safety, and the efficacy of their drug in order to get an FDA approval stamp on their product. This approval would then be the guarantee that a consumer could look for if they wish to buy a pre-approved (and, presumably, more expensive) drug. A company would be incentivized to go this route as it would ensure them preferential treatment with consumers in the market. A consumer could, of course, still buy a non-certified drug, but they assume the risk associated with that.