Didn't know that he had more than a million followers on Twitter but I'm sure that he doesn't deserve this amount of attention on Bitcointalk.
He and others like him do not deserve any attention here, but when we look at what people admire today, then it is not surprising that a book could already be written from all the posts in which this character is mentioned.
I have no clue why should someone be willing to donate to a millionaire, let alone donating $4000 as someone did yesterday on his donation address. But I wouldn't eliminate the fact that he might be doing all donations himself from his unknown addresses. I can post a donation address and donate lots of satoshis through different Bitcoin addresses and manipulate the fact that people follow my tweets and send me lots of donations.
Maybe the mysterious donor is his son, who is known to be an investor in cryptocurrency, or someone so naive that they believe everything they read online. The world is full of people who have very strange views on life, so it's obviously normal for them to donate money to people who already have too much.