There's a lot of things in animal meat that won't be in lab meat. And given what they charge for oat milk and impossible burgers,.I doubt it will be more cost effective for the public.
Can you give one example? I'm starting to doubt the honesty of your argument.
I found one source talking about nutrient problems, which talks about B12 and iron, and suggests adding them to the nutrient mix. https://www.burdockgroup.com/the-nutritional-challenges-of-c...
Again, not opposed to lab grown meat... I still feel that it may be appropriate to still consume some animal based nutrition. Even if that is limited to mostly dairy, eggs and/or fish. As I stated earlier, half to two thirds of what people consume is mostly energy alone. Hormonal responses will vary based on the content, but strictly speaking, not so bad one way or another, provided an appropriate balance of amino and fatty acids, which even there, I doubt will be optimal.