It is also wise to look at your accounts at least once a year because some of your investments might pay dividends that you have to report on your tax returns.
In America, yes. The person you're replying to seems to live in Europe. I believe in many European countries there's no tax on accumulating ETFs that reinvest dividends, until you sell them and realize the capital gain.
In a way this erases the tax efficiency difference between dividends and buybacks.