Burden of proof. You guys have been pushing this upscaling thing for months now, you should prove it. I'm trying to find some rational explanation for it, and the data until now does not follow what you are saying.
This doesn't seem a big deal, but you might be spreading bullshit and affecting the workflow of many people. Uploading upscaled videos not just will take much more time to render, but also requires more space consumption and network bandwidth. For professionals working with this platform it is very relevant.
You're in a forum to discuss rationally, not just to show off and do small talk.
Ok here it comes, I thought you checked the video on my previous post in other threads. Title over image, named so you can follow in your prefered viewer. Look at them at 1:1 / 100% "zoom". Tried to pause every video excatly after 4 seconds, the tram goes by in the distance goes quite fast but hard to match better for same frame.
Viewed on a UHD display from a 4k Youtube upload cropped for users that doesn't have a 4k display.

Viewed on a UHD display from a 1080p upload cropped aswell.

Now you may ask, how do i process these videos with 1080p and UHD? I can say the only difference with the two is that I use the new SuperScale feature in Resolve 15 at 2x and low on both sharpening and noise reduction settings for upscaling. And this is upscaling its not all those that argumentet that 4k is better quality when downscaled at a 1080p then 1080p itself was, there you could gain much by sharpening with downscale. This is upscale! I include offline viewed version, but there won't be this big off a difference at all when viewed offline ofcourse, since Youtube then isn't involved.
Here comes the same image but no crop.
4k

1080p

And i know one will ask for screenshots viewed at 1080p from both the 4k upload and the 1080p upload so here it comes.
4k

1080p

Ofcourse this is compression and and i posted stills, these compression artifacts are even more visible when viewing the videos instead of still. When you have dark parts of the image or any noise Youtube 1080p is very bad and pixelate stuff while Youtube 4k doesn't
UHD/ 4k
1080p
If you want you can read about it, I won't since I believe I won't get any reasonable out of it, I see what I see.
You talk about professional workflows? First off, my advice for people that would like to work with this camera. Get rid off all program and apps, just use a simple MLV to CDNG that doesn't affect the image in anyway, no nothing. No demosaicing no vertical banding fix, no highlight fix. no nothing just plain CDNG files at shot resolution. Then use Resolve 15 Studio, the beta until the 15 is released. You need to apps, a simple MLV app and Resolve thats it. You store your CDNG files, and export from Resolve your end result, thats only one export during the hole workflow. Don't mess around with Adobe. But this is as you said for people that work with it more proffesionaly or more just as a hobby on higher level. Below that you can spend your time however you want, since the focus isn't video making more developing apps. You can't beat Davinci Resolve from BlackMagic even if you put all your availble time in developing that.
Sorry for harsh tone, but if you call this "bullshit" just because its upscaling involved, and then yourself and others have to most complicated workflows with grading here and there, a few exports back and forth doing someparts at many different levels. Did you even check the last video I posted in Adobe Garbage thread? How did the quality looked?