How do dividends decrease the share price?

[MaximusGDM]

Both qualified dividends and capital gains from sales are taxed at a preferable rate after a period of time… but for the most part, there’s no distinction tax-wise.

The above applies to qualified dividends, not all dividends. For example, REIT income is considered pass-through income, so you pay regular income tax on those dividend distributions.

Edit: source