The proposal is to split the LSP implementation into a transport layer and a logical layer. The current LSP implementation is directly tied to JSON-RPC.
Apple's end goal is, as you say, to get clangd to work with Xcode. However, having a replaceable transport layer for LSP could benefit lots of people other than Apple.
Apple's end goal is, as you say, to get clangd to work with Xcode. However, having a replaceable transport layer for LSP could benefit lots of people other than Apple.