If you're talking very specifically about MCP, and not about tool calling more generally, and you're just sort of making the point that the standards aren't fully baked or ready for general use --- that you can't yet reliably plug any API into an agent like Claude Code you don't control, then sure. But MCP is the public face of tool calling, and for tool calling generally that's not a real problem: you can make your own arrangements in your own agents, which are truly simple to write.

I think as a developer, as opposed to an IT integrator or something like that, you should be the most excited about this situation.