Boris, I use Windows 10 also. I think I have discussed similar problems on here.
I agree - the uninstaller is not clean enough. I looked into this and the reason is that some of the directories need privileged permissions to remove. Even though I am the sole user on my laptop, and can install software etc. my account does not have the enhanced privileges to remove these diectories.
I could not find a good solution to this problem. I think we need to cooperate and look at the Windows 10 install/deinstall process. I am happy to cooperate with you here.