It is by controlling transaction fees that they effect inflation. It doesn't matter if BTC tokens can't inflate when the cost of transacting in BTC is inherent to using BTC, and they can control transaction fees. Blockstream controls transaction fees, and thus BTC inflation.

Further the derivatives market is a mechanism to control the price of BTC irrespective of inflation, just as PMs and other assets are manipulated to artificially depress their prices, enabling other players than the specific entitites that control Blockstream to affect BTC, opening that market and increasing the real value of BTC to them for those purposes.

You aren't wrong about BTC and censorship AFAIK, but that merely demonstrates that there is no censorship proof mechanism extant today. This is why we need mesh networks and open source hardware before we can have secure and censorship free speech.

Thanks!