> we don't actually want you doing well with your investments No, its saying if you do well on certain types of investments you need to pay tax. If you do poor

> we don't actually want you doing well with your investments No, its saying if you do well on certain types of investments you need to pay tax. If you do poorly on your investments and lose money, you'd actually want them in a taxable account (because you can count the losses against other gains).