It is an emerging phenomenon. I don’t think it is about whether they got in on merit or not. I think it is snobbery.
For example, my son’s independent primary school is the best in the area. Very academic. However, entry is not by selection and it is basically a case of whether you have the finances and whether there are any obvious issues with your child.
The area it serves is hugely diverse. BUT what I have observed over the years is that the intake is now largely Asian. It’s now to the point where all of reception and Year 1 are Asian.
I’ve overheard white parents talking about this in a way that they don’t like it and look down in this evolution.
My conclusion is that there is a phenomenon of white flight from some independent schools. They are not even bothering to seek entry into schools that are perceived as predominantly Asian. Hence the majority of potential students to certain independent and grammar schools are Asian which then means that the vast majority that get accepted are Asian. It’s a vicious cycle that ends in little diversity and some schools look down upon as being “too Asian”.
The other thing I’ve noticed is that there is a narrative around “well-rounded” rather than just academic, heavily tutored children. Again, it’s a dig at Asian students who tend to be heavily tutored and under pressure at home to succeed academically.
If it was a case of only who gets in on merit, there would be much greater diversity at application stage and eventually at admissions stage.
Also notice that just as Asians at going to independent and grammar schools in droves, Oxbridge is now giving preference to those at state schools, where the white flight has headed
Many Asians also look down on independent and grammar schools that are predominantly Asian. They prefer diversity. One couple said to me, without a hint of hypocrisy, that these schools focus too much on academic scores which can be obtained through tutoring to pass the particular exam of a particular school. Their son is heavily tutored and gave up all his extracurricular activities to focus on entrance exams since year 4.