[l_m_g]

This.

The "trustlessness" in Bitcoin & Ethereum are conditional on the lack of collusion between miners.

It's particularly jarring to hear people clamor that it's "trustless", confusing the computational security of crypto with the much weaker game-theoretic security of Bitcoin. Marketing I suppose.

[drcode]

As far as we know, blockchain systems are the best way so far to minimize the amount of trust. It's all well and good to talk about how imperfect blockchains are, but until something better comes along it seems like not much can be gained by parsing out different gradiations of "trust" in the way you suggest.