I actually read your thread about this so called "Certificate of Incorporation" and to be honest, I also thought that such document is essential to prove the genuineness of a project. Meaning, when they showed in their website the certificate, I though that the project was genuine.
You are not the only one who got fooled by that document, I also thought that it means something first time I came across that, and probably many others, especially if they are not from UK and don't know how all that works.
So, first time I saw Certificate of Incorporation being used at some obvious scam website, I thought it was photoshoped, but then I went to Companies House to check that company number, and I was surprised to see that company is listed there for real. It was weird, but I let it go, as I assumed that some are just willing to scam even with the real company behind it. But then i started seeing more and more of those ponzies, and all of them were registered in UK so I started becoming more suspicious, thinking that there must be a reason why they prefer UK. A little bit of Googling about it, and it was obvious how easy it was to submit false data to Companies House, and then based on that get that document. Worst of all, it's very cheap to do that (all this for less than 50 GBP)so it doesn't have to be some high end scam to pull this off.
They know that an average investor won't dig that deep, and if they are ready to believe that 10% per day is somehow realistic and possible, they will easily buy Certificate of Incorporation as a solid proof of legitimacy.