"Lab-grown" is such a vague term. There's no indication that today's tech is the best that could exist.

The purpose of lab-grown meat is to remove unnecessary parts of the animal from meat production. While many animal parts could be substituted, right now lab-grown meats have the opposite problem, that too many not-animal parts have been introduced.

What if "good" parts of the animal come back? Could disembodied guts and livers turn non-sterile grass into sterile, nutritious plasma? Could muscles grow in slabs and have slices removed regularly, protected by a working immune system?

Lab-grown meat is at the same stage as the early ornithopters.