Program code is data. You cannot control how people interpret it.

Isn't the fundamental issue here, the witness discount? Apart from that i can't see anything else worthy of discussion. If people are prepared to pay for data encoded in txs, they will always be able to - even in the most disruptive way - see 'Stamps'. I can't see any ethical basis to tell them they can't, nor any technical way to prevent it. 

 Plus, it's impossible to get rid of what he deems "spam" – it's the beginning of an endless cat and mouse game.  

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 That's what I thought... That's why he didn't explain further when I asked him. 

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