Whilst that is all true, and I fully agree with that, the simple fact is this, Win10 will be their OS going forward. There is always a grace period for older OS's, but eventually they will stop working for newer products, or be easier to hack if connected to the web. So you choice going forward will be to use Win10 or to move to another OS, that may be next year, it may be in 4 years, but eventually you will have to.
There are programs out there which remove a lot of this spyware, and all the bloatware installed as default, to a varying degree, me I am sitting on the fence, I have Win7 on one ssd, Win10 on another, and Linux on a further one.
Whilst its not good for the consumer, this is the way the whole industry is and has been moving for a long time, everything will be in the clound, always connected, and the user will own nothing, will not even have anything locally - this is what the industry wants and has the resource to achieve regardless of what the consumer wants as they have no choice. Its the same with any digital product - TV streamed via netflix or something, music - streamed by one of those services, games streamed from steam, os and apps hosted in the cloud. This all benefits the industry many times over from control, through advertising, through reduced costs, to less need for support and such like. So if half the world turned off Windows it still wouldn't matter to then at all.