On a scale of 1-10, how bad of an idea is it to dump everything into BST right now, Blackrock Science and Technology

I get the gist of how the fund works and I'm 100% happy with the holdings. My concern is that I have 0 idea as how on earth they manage to stay so consistent with their dividends and have consistently even raised their dividends since inception. How have they managed to do that and how sustainable is that yield going forward if a bear market persists for an extended time period? Simply selling CC's should not ( as far as I'm aware ) be THIS incredibly good, especially since they can somehow raise their dividends and be so consistent with their pay outs without ever once decreasing them. What am I missing here??