I'm going to have to argue my point here... We're talking about different things. If you're talking about footage flexibility and colour fidelity - absolutely you'll get much better results in good lighting on an Arri or DSMC2 RED....
For literally anything else you might be concerned about - i.e.: what most people will care about when shooting, the image out of a DSLR is infinitely better. I'm not addressing better to grade, since obviously it's both compressed and stored at much lower bit depth and file size (these are all good things in a home context). I'm talking about sharpness, autofocus, and low light performance (including colour accuracy in extreme low light). These are inarguably better on DSLR. For heavens sake you can get reasonable footage out of an A7Siii at 12,800 ISO.
You're looking through the wrong end of the telescope here - i.e.: accuracy and manipulability in a situation with a post budget and crew. I'm speaking to appropriateness for real time streaming and home recording with zero post. You literally can't get HDMI out of an ARRI. It's completely inappropriate for this purpose.
So to make a crude example - even if you could set up the Arri for this purpose - streaming in Fuji Eterna or Sony S-Cinetone from home will look infinitely better than unprocessed Rec.9 from the Arri, for 99% of purposes.
We're talking about completely different things. You're like an F1 driver mocking the suspension and ABS on a family saloon. No one should ever drive your F1 on the road, whatever its obvious benefits for the specific situations it's perfect in. For one thing it costs multiple times the price of the best possible family car. For another it requires a trained crew. And so on...