Agreed, aog, the judges not only won't but ought not to take notice of governments telling them anything ('separation of powers' comes to mind). If the government wants the law to be different , it must change the law, not complain because, as it is, the judges interpret it in a way that the government doesn't like. The answer lies in judges being overruled by the appellate courts, or by 'guidance' ( a nice euphemism for 'orders') coming from those courts if the law is being misapplied or misinterpreted in a particular case.
It plainly is being misinterepreted in some cases, if newspaper reports are correct. As pointed out above, the 'right to family life' is not absolute. However, the popular press doesn't report those cases where the law is applied correctly; these are to be found in the Times Law Reports and in the formal law reports which lawyers use, and are, of course, cases where the applicant has been told his 'right' is denied because one or more of the provisos to Article 8 (cited above) apply, and appeals (without success in the ones I've read)