OP: you are predictably getting a lot of heat from some posters, but believe it or not, there are quite of lot of people in the teaching profession who will (sometimes off the record) agree with a lot of what you are saying.
Take this teacher here, for example (she is a teacher herself, but in this post she is talking about her own child's school):
"Most schools rely on parents to teach children to read.No! I can already anticipate the angry response as teachers explain that they run weekly or bi-weekly group reading sessions and daily discrete phonics sessions…
It will make me horribly unpopular to say it but still I stand by my original claim....
"... I am all for teaching reading through synthetic phonics but the vast majority of schools use ‘mixed methods’ which marginalises the use of phonic decoding when reading. ...Add to this that if schools follow the good practice videos for phonics instruction issued by Ofsted, most phonics sessions will involve delightful games that may be engaging but contain little sustained practice.
"The system is wrong and makes me very cross. I am told in every school newsletter about the delightful, engaging activities my kid is getting up to at school. There is almost a profligacy in the use of time. A numeracy session in which each child gets to throw a dice twice so manages only two calculations in half an hour. An hour of forest school a week. Phonics through parachute games. There is a cost to this indulgence but it is played out behind closed doors. In the family home the experience is a tad less joyful as the parent returns, often dog tired, from a day at work or is wrung out from a day with a fractious toddler. They prepare the meal for the children and then with determination that can only be summoned because they know their child’s future depends on it, they coax, bribe and sometimes (to their own shame) threaten the tired child to read."
And that's even before you get on to the fact that a lot of parents are illiterate, cannot speak English properly, or are simply unable to cope with doing this due to overwork, multiple sublings or disabilities and health problems. If we rely on parents to effectively teach basic skills, that basically means we are allowing illiteracy and inequality to be passed down the generations like a toxic legacy. Schools need to be prioritizing core academic content. If that means a bit less time spent on Golden time, endless dressup days or making Xmas decorations, well, so be it.