The instructions you supplied do no apply to Windows 10.  There no longer is an "All Programs" option in the start menu.  If memory serves that went away with Windows 7! 

I do find in my start menu a "Web Connections" option.  There is however no option to disable it, nor is there a way to uninstall it.  

I started the "Web Connections" app and poked around within the app but could find no way therein to disable it.  I attempted to use the uninstall option which took me to the Windows Settings list of applications to "uninstall or change" but could not find it (or anything like it) included in that list.

I rechecked the Windows Settings Startup Apps list and again confirmed that all entries in that list (Intuit Data Protect, QuickBooks and QuickBooks Update) were disabled.  I also recheck the same list in the Task Manager Startup tab list and found the same thing. 

I found the web connections folder within the QuickBooks fold in programs and attempted to disable the app by renaming its executable prefacing the name with an X.  This did not resolve my complaint however as when I logged off the machine and the logged in again the "Intuit Data Protect" splash screen attempting to get me to try and buy that service reappeared and shortly there after QuickBooks started as well. 

I could live with the time it takes for these apps to open if I had any intention to use them during my session, but since I don't they are a real annoyance and a source of frustration.  What really upsets me is the fact that your developers have employed a way of deploying these apps which circumvents my ability using the operating system to disable and remove them.