The structure
Hold stock, sell a call against it, collect premium. Income arrives immediately and predictably, which is why it is marketed as an income strategy and why it automates well — strike selection and rolling are rule-based.
The trade being made
You have sold your upside above the strike while keeping all of the downside. In a flat or gently rising market this is a good trade. In a sharp rally it caps you out of the return that justified holding the stock, and in a crash the premium collected is a rounding error against the loss.
The honest framing
This is not income generation; it is a conversion of uncertain upside into certain small payments. Whether that conversion is favourable depends entirely on whether implied volatility is rich relative to what the stock subsequently does — which is the same question as every other volatility-selling strategy.