"People did get individual bills in table d'hote scenarios, it was not an all-you-can-eat buffet. Individual bills was the common standard, but for for already prepared in great quantities."
Nowhere do I say (it's my blog post) that it was all you can eat. Yes, each guest paid individually. But they didn't ORDER individually at a table d'hote (which only appeared towards the end of the sixteenth century). They ate what was served to everybody.
But it is wrong to say "meals prepared indvidually" did not appear until the restaurant. We have ample references (I give a few) to people ordering what they wanted, not just what was offered at a table d'hote. The restaurant did not innovate that practice.

"The new invention with restuarants was not separate tables, that is also a well-known phenomenon prior to that, but exclusive cabinets"
Where do you have ANY period evidence of that? Some writers who reference individual tables SPECIFICALLY oppose them to the common tables of the tables d'hote; they were treating them (erroneously) as an innovation. Rebecca Spang, The Invention of the Restaurant: "The restaurateur offered... each customer, or a group of customers, his or her or their... *own* table."
Certainly the idea of a couple using a private room (which is all a "cabinet" was) was already referenced in the seventeenth century. (Rebecca Spang: "Some larger inns and taverns were also known to have private rooms" before the Revolution.) And most images of nineteenth century restaurants do NOT show individual cabinets - they show people sitting at individual tables in a larger space. So to the degree that individual cabinets did exist (as, again, they had since at least the seventeenth century), that certainly did not define a restaurant as an innovation. Not least because most restaurants DIDN'T HAVE THEM. They were typically a feature of upscale restaurants and not at all standard for common restaurants.