I don't know if you realize that you can still have lightning without having a 4MBs of block weight space. And to carry the analogy further, you are kind of making my point. In the Civil War, THE United States abolished slavery, (got lightning) but at the cost of a federated union.(a fixed bit correct block limit.) The thing we are talking about is more nuanced than "Got Lightning".

You can get lightning with 1MB blocks, 4MB is a problem