For "dodgy decisions" I mean things like:
(1) It's not clearly in the law, but just supposed to be implied by it.
(2) Courts can reach completely opposite decisions depending on the individual judges at the time. So these decisions have a strong element of subjectivity, in some cases.
(3) The personal politics or morals of the judges could easily be influencing their decisions in some cases.
So you end up with decisions, that aren't clearly the law in an objective sense, that may be politically biased, and that very possibly aren't real "human rights", and indeed they may be violating people's rights.
And while judges could do all this by accident, it's also possible that a judge could be self aware that they were bending the law for political reasons.
is that not a very reductive argument? That simply because a government determined to be outside the ECHR means it is no value?
My argument in that case was to give an example of why it was far from a perfect system.
My point being, no system is going to be perfect, and you need to realistically look at the issues and limitations of the ECHR, if you want to argue it's a good system, or better than alternatives.
Maybe not you, but some people may have this simplistic idea that, "our rights aren't protected without the ECHR".