There are a lot of sweeping statements about schools failing.
I thought most people accepted Scotland and Wales had huge problems in their educational systems.
With each countries state education the difference between the good school and poor ones is also often huge. My DC school blames it's dire results behind low sociel economoic intake but other areas with similar or worse intake do better. Same with some school in good areas some of them rely heavily on outside tutoring.
If you child has SEN/ND/disablity - you often get to see a very different side to schools than if that not the case. I've known parents with NT kids who though schools was great till the SEN/ND next child got there are then they saw a very different side.
I think generally the English system and UK system more genernally is holding up - often at expense of some kids mental health and the work load of many teachers getting very heavy. However most people post when there are issues - and not every school is doing well and not every child in a school dong well will be having the best experience.
Even Uni scetor is undergoing massive problems - often around funding but also around cuts and job losses - those do hit the news biut overall we still massivly punch above our weight with research.
Criticising the edcuation system is not the same as blaming teachers or staff for failing and it's often done because people want change - they want inprovements to happen - they tends to be less presure for change or more resouces if anyone sit round saying how well things are going. Also for some kids SEN/ND kids thing are not going well at moment and many are being pushed out of the edcuation system entirely leaving parents to fight or pick up the peices.