This may become fundamental news for good bitcoin to increase again. However, actually, we don't know about him and he is not very popular enough.
But, it will become a good influence on that country itself. It may not give a big influence on the world as Elon Musk did.
Sometimes, if a public figure or influencing people also connect with Bitcoin in a country, they will give more influence to their followers or even other people to follow.
I agree that we don't know the person but if he could buy something like billion dollars equivalent of Bitcoin then it's considered that he's a whale too. I believe there are billionaires out there that we didn't even know – yet they invest in Bitcoin because they've seen a great potential of this crypto currency as an asset valuable such as gold and diamond. I bet people who knew him would eventually follow and support his decision about how Bitcoin is an innovative creation.
Besides we do have a lot of richest man in each county we are living but most of them didn't take an effort to announce their selves that they've bought Bitcoin in the first place. Sooner or later the message will scatter to their fellow business partners, I guess this is a start again of making a new ATH record.