Police in many EU countries was systematically searching suspects phones without mandatory due process. This was prima facie illegal, everyone involved knew it. They did it regardless.
Yeah, this decision eventually resulted in many governments issuing new guidance, and some countries rewriting their national legislation. Is that a big victory for the rule of law? I think not, the national governments should not be knowingly violating the ECHR in the first place.
It took Ireland years from an ECHR ruling to rule buggery was not unlawful, and Ireland was given a special exemption to the EUs abortion laws which remained in place for 26 years.
I interpret ECHR as what it is: not a regulatory body by any stretch of the imagination. It can recommend changes to the national law, but it cannot force any state to do so. You seem to be interpreting it as some sort of an equivalent to the US supreme court, which it is not.
But now we're straying even further from my original argument which boils down to "laws mean something" into arguing the intricacies of how laws are supposed to be changed. I'm not interested in having that discussion, as it has nothing to do with my original claim.