The "junk data" framing already concedes the argument. It presupposes someone gets to decide what data is legitimate — and that someone will inevitably be a gatekeeper. Fee markets are the actual filter. If data isn't worth paying to inscribe, it won't get inscribed. If it is worth paying, calling it "junk" is just an aesthetic preference dressed up as an economic argument. The off-chain trusted-third-party outcome you're warning about? That's exactly what happens when you optimize the base layer for "financial activity" — you squeeze out the use cases that don't fit the approved definition and push them somewhere with weaker guarantees.