the winkle twins have notr truly understood botcoins and are using bitcoin fame to till their own pockets. when investing through the winkle twins you do not own actual bitcoins. you own a digital numeric representation of a bitcoin, which actually never leaves the winkles ownership.
basically you own shares in their holdings not the actual bitcoin they hold. it wont bring easier method to buy bitcoin, it wont be spendable in shops. its just a share purchase, so yes the winkle investments are just for the rich, not for the average consumer that wants actual bitcoins.