@Merryclaire it's a genuine post, and you are within your right to find it strange. Clearly we have different interests, which is again, fine. Therefore if it is not something that interests you or you find 'strange', why do you continue to engage with the thread?
PP have stated it's tone deaf. But then I don't understand why they have also clicked on and read through the thread? The title is very clear and if it doesn't interest them they are free to scroll past. As a pp said, the thread is the room so many people have read the room correctly. No one is being forced to read through or respond. My thread title was clear who this was aimed at. Many people have provided clear and insightful advice which I've been grateful for.
You find it odd that I have asked questions regarding private school etc. Interesting. Those who answered clearly didn't find it odd and provided detailed and helpful answers. I, and others like myself like to plan ahead. Whilst the costs will change it is good to have an idea so I can have an idea of whether I think it would be feasible on our projected earnings. Again, nothing wrong with that which is evidenced by those answering the questions and engaging helpfully.
If you read through my previous posts you will see that I've explained we have financial advisors for our investments and protection. My initial question was regarding disposable income. I received amazing advice over and above what I initially asked and I'm very grateful for that. It's bizarre that you are perplexed by my questions because clearly you have nothing profitable to add to the discussion but there are plenty of posters on this thread that do.
Many people ask strangers a range of questions on a variety of boards on Mumsnet - as is their right. It's not your job to police what is posted or where. The relevance has been explained in my several posts and by other pp who have identified why it would be beneficial from me to have guidance from other high earners as I come from a modest background.
My AIBU was re other high earners and how they spend their disposable income. Not whether it's reasonable to post this at all. I think that is quite clear in my op.
I hope this answers all your questions clearly and comprehensively. I suppose the main takeaway is that really, you should read the room, which starts with the thread title.