It is very hard to define exactly what "inadequate, irrelevant or no longer relevant" means and if Google refuses to delete an entry upon request the person ask

It is very hard to define exactly what "inadequate, irrelevant or no longer relevant" means and if Google refuses to delete an entry upon request the person asking for the deletion can sue them if they disagree with Google (which they probably would since they asked for the deletion in the first place). This could potentially result in thousands of expensive cases for Google which means they will probably just follow through with most of the deletion requests. This in turn means that many fear cases like this, where somebody could be trying to clean up their past, getting rid of entries that display them in a negative light, if justified or not. At its core the idea of the law is probably desirable but the current wording and its subsequent implementation mean that is a powerful weapon for everybody trying to clean their past from the web.