Earlier quoted context omitted.
These are deliberate redefinitions of the term "Turing complete". The reasonable interpretation is that evaluating a single block can involve an arbitrary computation (if given enough gas). Ethereum has this property, Bitcoin doesn't. These redefinitions say that you can take a few computation steps per Bitcoin block and save their state such that a later block can take a few more steps, so over time, very slowly, sp…
Ethereum blocks have a gas limit so it wouldn't be Turing complete under your definition either.
Ethereum has a Turing complete language that is only limited in practice by external constraints like the gas limit. Bitcoin doesn't have such a language.