They're already perfectly good! I got the quorn nuggets for free one time, and I enjoyed them. Sometimes I get the beyond beef burgers, and while they're a little tricky to cook (no built-in fat) they still come out delicious. I've switched to buying oat milk because it lasts longer.

The problem is they're more expensive than the animal products. And that's because of government subsidies on the animal products. Take that money, put it on the alternatives to make them equal in price, and you'll see a lot more people switch.