I'm not arguing strongly for grammars, except super selectives, I'm just of the opinion that they aren't any more unfair than our current comprehensive system, and for the small number of poorer dc who get them are life changing.
Dd has two friends who are particularly screwed over by the local school. Regardless of the fact she is deprived in all ways, friend 1 would get into any state grammar. Instead, it will be a bloody miracle if she makes it to sit gcses without some form of breakdown. If she does, she will get great grades, but is likely to be so put off learning she won't utilise them. She's barely 12 and in a year has gone from delightedly wanting to use Dd's resources to saying 'there is no point'. And I find that incredibly sad.
Friend two is bottom of the ability range with sn. No school will ever get her pass grades in maths or literacy gcses. But a good school would play to her strengths, and let her leave with her dignity and skills. Instead she is just more long term jsa fodder in the making, because she'll leave with sweet fa, except perhaps mh problems. And then the mc can all point and sneer at the scrounger. With any luck next time she is bullied and explodes, she'll get expelled and get a better school. Again, incredibly sad that best case scenario is being chucked out.
I know full well a grammar would do nothing for her, she'd still be at the worst school. Sorting the comprehensive system is the only way to improve her lot.
But nobody is actually doing anything about that, but at least a grammar would save one.
But nevermind, being on the losing end of comprehensive unfairness isn't relevant to the likes of fresh so fuck 'em.