In money-free society a majority of people will choose to eat CULTURED MEAT

So you are even further restricting the supply of meat. This means even LESS is available for distribution. This will make the problems I outlined even MORE intense. You have answered none of the questions about who will get this even further restricted supply of meat. Who will get the even more limited amount of meat, the restaurants or the supermarkets? Will I be able to walk into a supermarket and fill up my cart with "cultured meat"? Can I order cultured meat every time I walk into a restaurant? There will not be enough cultured meat for everyone, who will decide who gets it? Who will decide how much cultured meat an individual or business can receive? How will the limited supply be distributed fairly?

These same problems exist for vegan foods. These same problems exist for every economic good. Everything that has a price is limited in amount. This is why things have a price. There is not enough of it to go around, so some way has to be in place to reduce demand for it. As the price of a good goes up, the demand decreases.

The reverse is also true. When there is a lot of one particular good and/or low demand, the price will start to drop. As the price drops, the demand goes up, and this reduces the over supply of that good. How will your "no money" economy handle the problem of over supply? What if corn growers grow too much corn? What if everyone decides they want asparagus instead? What will happen to all the extra corn? Will people be forced to take corn? Or will it be left to rot?

This is another problem that you "money free" economy can't solve. The free market is constantly changing every day. The demand and supply of every good is constantly shifting and changing. Prices change in reaction to the changing conditions. How will a "money free" economy adjust to all the constantly changing conditions in the economy?

As to what people eat, that is their decision. I haven't had any refined sugar for the last 3 months. Zero. It is not hard to do, you just have to decide what you want to put in your mouth. If more people decided to eat healthy, the market would respond and produce more healthy food. That people choose to eat unhealthy food is not the fault of money. The free market provides what people demand. There is a large demand for cheap, fast, and sugary foods, so the market obliges.

Thinking that people will become self sufficient homesteaders is laughable and impossible. 55% of the world's people live in cities with no room to grow enough to sustain themselves. These people would all starve. But you don't care that 4.2 billion souls will starve, because you don't like money. You can't make an omelette without breaking a few eggs, eh?