I have seen what you just described a long time ago but that video conference can still be faked in a way, some scammers aren't even scared using that even though their face is already there but in this case it's pretty easy to fake in my opinion, a fake beard and some make up could sometimes do the trick.
The way it was done at Bitpanda, you would have to use deepfakes to actually fake it. For example, the face was photographed from several different perspectives ("turn your head down, turn your head left and right, nod, ...) and compared exactly with the ID shown. This was then also checked for validity after the video call.
Of course, it is not impossible, but the effort to fake the ID would be incredibly high in my opinion.