Stavros, you seem to have moved from an outright denial that such micro-management exists to the claim that it's okay because it's justified by the precautionary principle. Which is the usual justification for such interference. I've read the story to which you link. The restaurant in question was presumably already regulated, so the story is not exactly a poster child for the efficacity of regulation. Of course the same might be said had there been a free market in this restaurant's products (which is arguably irrelevant under the circumstances): as you say, and as I have already said on this thread, its self interest lies in best-serving its customers, giving them the best food it can without poisoning them. Given the nature of the product, in a free market, it might have explicitly warned customers that making the food taste as good as possible in some cases ran the risk of food poisoning, and customers could make their choice as they saw fit. Few would, I imagine take up the offer, but at least it would be there. Now, in one tiny way, to add to all the other tiny ways in which regulation stifles our lives, customers at this restaurant have had that choice removed from them. Nanny knows best. Apparently that proposition doesn't bother you. But I consider myself an adult, and I can make my own decisions about what suits me.
None of this dispensation existed under mediaeval monarchs, whose bureaucracies, whose ability to gather information and act on it, were minute and trivial compared to those of today.
I agree that serfdom was a moral and economic fact of life, but then so is the fact that we work for the government for about half the year (more or less, depending where you live). The distinction is one of like, not one of kind. You refer to the fact that under feudalism, property was (usually) held on sufferance. I would argue that nowadays the concept of property in the western world has been so debased by the terms on which it is held - that boiler you aren't allowed to decide where to locate, for instance, as to be meaningless. Eminent domain, in the US, is another example. Granted, life in the mediaeval era was nastier, more brutish and shorter than it is now, but then again the intervening period of the industrial revolution, as well as medical advances reducing child mortality rates, explain that difference.
As to comparing rates of taxation then and now, you say that "To compare the rate of taxation in the 14th century to what we pay today is meaningless without the context." But that makes my point for me: the context then was of a stunted government which, outside the ambit of the feudal settlement into which most people were born, had no impact on how they lit their mud hits, or where they located their fires within those mud huts, etc. The context now, by contrast, is of a much greater tax take which contributes to funding the micro-management of precisely those things (or their modern equivalent). We are better off, but in many respects less free. And we can be conscripted for military service.
Btw, who's this "William Shakespeare, a poet and playwright" of whom you speak?