Wow! They surveyed 7000 people around the world and came to conclude these numbers.

Near 7% is quite bullish. But to say that Bitcoin is only owned by less than 1.5% is quite bearish.

Don't you think that a big percentage of shitcoiners also have Bitcoins, less or more?

This isn't true and can't be true. There is a big number of people who still hold Bitcoins on exchanges. But they aren't counting them.