This bullshit debate again. Can we just finally admit that it's not a matter of possibility and never was and never will be? Technically every single game past and future can be ported to every single device past and future. It's a matter of feasibility and fidelity. That matter wouldn't come up if the Switch wasn't such a restricted system but it does because it is.

If I see one more person unable to distinguish between possibility and feasibility I'm gonna strangle someone.

No! DF showed that the unoptimised PC version runs problematic on similar PC hardware (with a bloated Windows-OS in the background).

Your conclusion: the Switch version would be unplayable.

These are totally different things.

but at the same time, the low spec PC is still more powerful than the Switch.  

Digital Foundry said that a port of The Witcher 3 on Switch is possible, but it would take huge effort and reworking in some areas. It is implied that the effort and the reworking are needed to make the game enjoyable, not to make the game run. If you don't touch anything and port it straight to the Switch, the game itself can run no problem, but it would do it with a beyond terrible framerate.

What the OP says is just a flat out lie. If he said it because he wants to throw some shit around or because he is not able to understand what DF says on the video, I don't know...

They did the same with Doom, and they admitted Panic Button went further and made a better port of what they were expecting.

What I got from the video it was the CPU that was limiting and not the GPU.

so you mean Tegra X1 are equal to GTX 6600? 

Digital Foundry said "even if you reworking the games to the engines " the games will still be unplayable . 

Nope, I mean DF said the title in question was CPU bound instead of GPU.

Please show us the sentence where they say that: https://www.eurogamer.net/articles/digitalfoundry-2019-in-theory-is-a-switch-port-of-the-witcher-3-viable