I really don't care about the technical or cleanliness arguments against MCP (which are valid).

What I care about is that many companies didn't have APIs, and didn't see a reason to have them (niche, dev-focused use case, or might produce a competing frontend/app)...

but now, those companies have a reason (agentic but let customer agents access data!). And for me, that means more companies now allow me access to my own data on their platform. This has been a net win!