Do we have the logistics to implement that technology on such a large scale as to feed everyone?
It is not really a matter of technology or logistics in most cases. Plenty of groups of people lived on low or no meat diets before modern agriculture. Also, in a lot of cases livestock are fed food that could be used for humans, or food grown from land that could also grow food for humans. In those cases, meat becomes a lot less efficient of a food source, and the question is not "Do we have the resources to feed everyone with less meat?" but "What is being given up and what other costs are there just to have the level of meat they have now?" In other cases where the animals use food sources and land that is not usable by humans, it can get more grey and varies.
It is not really a matter of technology or logistics in most cases. Plenty of groups of people lived on low or no meat diets before modern agriculture. Also, in a lot of cases livestock are fed food that could be used for humans, or food grown from land that could also grow food for humans. In those cases, meat becomes a lot less efficient of a food source, and the question is not "Do we have the resources to feed everyone with less meat?" but "What is being given up and what other costs are there just to have the level of meat they have now?" In other cases where the animals use food sources and land that is not usable by humans, it can get more grey and varies.