The idea of "deflation" for a numeraire currency is meaningless.

This assumes that the change in prices with respect to BTC is unimportant, but this is not true in practice for a number of reasons: prices are sticky (so such changes disrupt trade), people hold varying quantities of BCT ( so it has distributional effects), and contracts are often specified in terms of a currency (more distributional effects).

(I will also note it is common for smart people to think they know the major relevant issues about monetary policy, and thus have useful things to say about it, long before they actually do. I think you are one of those people right now. No offense intended.)