misteriosly, I agree with everything you say except it is possible to run any version of Windows that you want. For me, I have a library of Windows ISOs. Currently in my collection I have several distinctly different versions of Windows 8, Windows 8.1 and Windows 10. My collection of Windows 10 ISOs currently numbers 14, and they are all very unique and distinctly different. I can actually install any version I want and run as long as I am not connected to the internet while I run it, because if you are connected to the internet then Microsoft will want to update your system.
Even the OP can run a different version of Windows 10 if he really wants to, he just has to determine which version best suits his needs and then he can install that version. The only problem would be virus protection and some programs might not run exactly right, but a couple of tweaks to the registry usually takes care of any software incompatibilities.