It's been a textbox example of the press managing to weave a whole heap of inconsequential details together to fill column inches, because they can't get any real accurate information. "X lives in a £X00,000 house... their business has a turnover/profit of £X,000... Holidas abroad... etc." All the "journalists" have done is checked the Land Registry and Companies House, and got as close to the social media accounts of those involved as possible. Most of us here could collate and throw together this sort of stuff.
Yes. I saw this first hand when a friend and work-colleague died. The press described him as (IIRC) a London company director. He was an IT support specialist, he happened to be a joint owner of a plane which was registered to a company for financial reasons; the press obviously found documentation of the latter, but not the former. I think part of the problem is that everything is presented as fact, when there is often doubt and speculation.
Anyway, some of the inaccuracies were understandable. Few of the victims were carrying papers, but I think I heard it reported that some of them had (forged) Chinese ones. At the moment, I don't think any have been identified.