Define "inadequate, irrelevant or no longer relevant".
Keep in mind your definition must apply to every single situation and under no circumstance a judge will disagree with your assessment and assign damages.
You can go first by defining such a rule about the first, second, fourth, ... amendment to the US Constitution. I'll even let you include all judgements by the Supreme Court on that particular amendment. Laws and judgements involving fundamental/inalienable (human) rights are never condensable into a simplistic rule.
Because that is what Google is facing, people can have any search result that lists their name removed if it meets whatever arbitrary definition of those three words a judge wishes to interpret.
The judge has to interpret the entire judgement by the ECHR, which is quite a bit more elaborate than that.
There is a very legitimate argument that those terms are so vague Google has no choice whatsoever but to simply delist every single thing they are asked to delist.
And there is a very legitimate argument that it does not have to do that. Such expressions don't say very much.
Given that Google strongly opposed the judgement and given the fact that the further interpretation of the judgement has not yet been set in stone, it's a bit silly to conclude that Google now doesn't have any choice, in particular since the judgement also explicitly mentions that search engine operators only have to act ‘within the framework of their responsibilities, powers and capabilities’. A good and fairly short analysis sketching the picture of the various points of interest can be found here.
There is simply no black and white argument to be made either way right now, because while the judgement does start from considering the right to privacy as trumping both economic interests of search engine operators and the public's "general" interest into details about other people's lives, it does counterbalance/nuance this in various ways. Given the beating that the right to privacy has been getting lately, I personally don't mind at all that it now got a pretty strong reinforcement.