I guess that depends on how you read it
I agree there is nthing wrong with that; the crux is almost down to poliotical leaning- whether you ahve a system that enables the naturally successful in our current set up (which is what we have) or focuses on one that can pick up the potential from the stragglers-who-could.
The first is by far cheaper and in many ways logical, but I find the second ethically preferable.
There are wayas to achieve that though without necessarily changing the entire system that would be compatible with Grammar. A higher-end version of ds3's school (he attemnds a SNU where he is able to access MS as he is able) for example- children are more complex than 'bright or not', many could benefit from a mix.
Also widening access to top up education for those who have missed out- if I pull ds1 to work at maximum input on his schoolwork, I do so in the knowledge that I am in some way fortuante to be able (that would make those who know why I can PTSL though), not all can do that so more access to homework groups (would have made a big difference to me personally with my chaotic homelife), more input from professionals who can teach in different styles and miore input foraprents- I have relaised I have no idea at all where the bys shgould be at theitr present stage, school offers nothing (and it is a top CofE school).
there are bright children, there are those who are able in different ways so should thrive in a system that focusses on the very real importance of other skills in life, but there are many children who are floating in the wrong place atm and these have been failed by both systems. What we need isn't a return to what-didn't-work- before(and really, at widening access it didn't for many, my Dad whose parents felt it was too expensive and unfair that one of their 16 children should go to gramamr after good 11+ whilst the others festered at a local sink school for one) but a merger what has been found to be successful from both systems.