Right. If antibiotic use in animal farming is as high as indicated here, you can't just ban it without severely impacting the food supply. I'm afraid this problem probably won't get "solved" until lab-grown meat is feasible and cheap.
Or until our eating habits change sufficiently that we don't require a hunk of meat for every meal. Once or twice a week should be enough.
"vegetarian with meat" is a surprisingly nice diet choice; avoid anything where meat is the focus and instead add some meat to what you're eating.
How are you going to ensure that "lab-grown meat" is not going to lack something important contained within farm grown meat? We already know that the composition of the meat changes depending on what you feed the animals. What about micronutrients we don't know about? Man has not supplanted nature in cleverness.
That would be part of the definition of "feasible". Nobody is guaranteeing it even is (but my bets are on eating a lab-grown steak in my lifetime).
I don't know why I'm being downvoted for a simple question, but my point was that I don't see how this it's ever going to be possible to demonstrate that these things are safe. Our ancestors ate game meat, not farm meat. And now people want to grow it in a lab? I'm not saying we can't make a trade-off here, but people focus on the things they can see and ignore the unknown (in this case, the health effects of eating a new kind of processed food).