First off let me make it clear I've been doing graphics and such for 25 years and I also worked a couple of years building workstations for CAD and 3D. I used Mac's from 1989, Windows from 1996 as well as being a former Ubuntu LoCo Team Leader, so I got a foot in Linux as well. So I feel I do have a pretty good foundation in what I'm about to write. And with that narcissistic rant out of the way…Windows 10 is clearly a more modern OS compared to Windows 7, which I would guess still is what most pro's run. I've had very little problems with Windows 10 and then consider I actually upgraded my workstation at home very, very early, maybe a month after the very first Windows 10 build was released. Since then I've had a Nvidia driver make the box unusable for almost a day and I had to revert one Windows upgrade due to the issue which was the reason for this thread - but other than that it's been rock solid, apps run fast, stable, no BSOD's, etc…
But I can say I have used group policy to shut down the Cortana stuff and the telemetry, even used some registry hacks to make sure the telemetry is off - it's a great function for MS to fix issues, etc, but they can use that data from the other millions of users, not me, hehe…
Anyhow, I won't recommend upgrading to Windows 10, because I don't want that responsibility, but I can with pretty good certainty say it's nothing to be afraid of and it's really unlikely it will cause issues with apps, etc…
My two cents, and then some.