I do see what you mean, @BiBabbles, and it can be tough for kids who read later than their friends. My eldest had a best friend who had been a proficient reader since she was a toddler. She had parents who could read well, no siblings at the time, and it just looked like reading was this easy thing which everyone should be able to do. For all that I dislike the competitive nature of school classrooms, kids at school will at least see that there are some others who don't find it easy, and I think she missed out on seeing that.
I believe this is why she felt the need to try to read when she was 6.5, despite it still being so hard for her: peer pressure, society's expectations. She worked and worked and made very slow progress until it fell into place around her ninth birthday. Perhaps it would have been much easier for her if she had felt able to wait and start at the age of nine, by which time she may have been developmentally ready, and she could have missed out the hard discouraging slog.
The trouble is, because she was unwilling to wait, we'll never know whether that hard slog was a necessary part of the process or whether she'd have found reading easy if she had only waited long enough to start. Likewise with parents who run out of patience when their child is seven or ten and decide that interventions are necessary - we'll never know whether that was the case or whether they just didn't wait long enough. The prospect of your child never achieving literacy at all is a scary one. And the kids feel it too.
No doubt there are children who have specific learning difficulties who do need interventions, but I think it's far fewer than we believe. The longer we wait, the easier it is to identify which kids probably really do need help.
Even kids with learning difficulties which make learning to read harder will sometimes read spontaneously. An acquaintance's dyslexic child was taken out of school aged 13 unable even to recognise her own name, and so traumatised by having reading forced on her unsuccessfully for all those years that her parents decided to put reading instruction off completely for the time being while she recovered her mental health. With the pressure off, within a couple of years she began to recognise words, to everyone's surprise.
And my youngest - her working memory has been exceptionally poor, well down in the first centile. She couldn't make phone calls because she didn't know which number she'd just dialled, even with someone reading them to her one at a time. As recently as age nine she couldn't manage I Spy because if I said, "I spy with my little eye something beginning with rrrr" she would guess "sky?" She couldn't rhyme. But she believed my assurances that she would read when the time was right, though some people have to work harder at it than others. And she was lucky enough not to care much what anybody else thought, so that unlike her sibling she didn't feel embarrassed about being unable to read yet.
Now here she is at fourteen, making great progress painlessly, well on her way to being a good reader. And I really don't think it would have been so smooth for her if she or I had decided when she was seven or ten that waiting was no good and she just had to get on with it.