It is easy to look back in time and say what could have been done better, practically easy when you're not involved in process at all, what so ever.
Something like "food will become safer" is trivial only in the most generic sense. It's entirely possible that something that we eat today will be found carcinogenic tomorrow and people will still take ages to accept and act on that new knowledge.
At least in my part of the ivory tower I see a strong shift away from meat, even my and my SOs parents (in their 60-70s) have (on their own behalf) cut out most of their meat consumption.
So if I had to make a Nostradamus prediction, I would bet on real meat becoming a pure luxurious item, something that only gets brought on the table for special occasions, over the next ... 50 years.