I have read this with interest, and have the same questions with our own pre-school.
While I totally endorse the idea of child-led play in pre schools, I do struggle with situations when the activity on offer is a special event (i.e. an autumn nature walk) or something that we as a society value as being a shared activity, such as singing.
In the case of the first example, DD (nearly 4) could not see beyond the attraction of the toy that she was playing with NOW to the distant fun of shiny conkers. It amounts to the old "do you want one treat now or five treats later" question: most pre-schoolers simply don't "get" the idea of delayed gratification.
Also, they are naturally neophobic, and I think that they don't have the capacity yet to make a rational decision on whether or not to do something that they have never tried before without cajoling and encouragement. My DD adores her swimming lessons, but still cried the first time that she went. Does this mean that I should not have persisted and persuaded her to stay, leaving her with her instructor? EYFS dogma would suggest not. In which case she would never try anything, be it food or an activity.
The second issue is that of singing. How on earth are the five or so children who want to join in with singing supposed to do so when others are playing around them? The theory is that they will be engaged in "quiet play" (so not having an entirely free choice, then...) but you do need a critical mass to make it an enjoyable experience. Again, DD spent her first playschool year just sitting quietly, and not really joining in. Now she is always the first one up to be a current bun or curling in a ball to be a sleeping rabbit. If it had never been expected that she would sit on the mat with the others, she would never have learnt to enjoy it.
According to EYFS, when IS a child old enough to be told, "actually, this is an important part of your development, and it just isn't optional any more" ? Why on earth does having some form of opening and closing routine interrupt their learning? It is surely part of it? They see everyone together, learn their names, feel comforted by a routine. Pre-schoolers in the main do not like it when there appears to be no clear structure to sessions. (Well, mine are both like this, and other parents have said the same...)
Life at home and life in general aren't about totally free choice; it's about learning to live with each other and perhaps do things that we don't really want to do, whether that is eating healthy food instead of just crisps, having your nappy changed when you would rather play, or listening to your friends singing Twinkle twinkle, even when you don't know how to yet.
How are other pre-schools tackling this sometimes over dogmatic interpretation of "free play"?