Not GP, but I'm excited about "clean meat" because I believe it has the best chance, over time, to have a huge impact on reducing animal suffering and reducing the environmental damage currently caused by animal agriculture. It'll probably be a lot better for human health too, since controlling what's in it will improve with a higher probability of success.
It is less resource intensive to produce. Hand-tuned assembly code burger vs transpiled javascript for the hot path (I eat cheeseburgers very often, as do many, many others in the countries I frequent).
You can feed more people with the same amount of resources. 80,000 humans a day die from lack of food. Everything we can do to meaningfully improve food production efficiency is a big win for the species.
Better control over the quality and consistency of the end product? I enjoy a wagyu steak a lot more than a tough cheap cut or minced up eyelids and connective tissue.