The structural point
Equities close. Futures pause. Crypto does not. A human cannot supervise a continuous market, which means the choice is not between manual and automated — it is between automated and absent. Every serious participant is running code.
What continuous markets do to risk
The largest moves cluster in the hours when Western operators are asleep and liquidity is thinnest. A position that is unmonitored for eight hours in a market that can move 20% in one is not a position; it is an option you wrote for free.
The watchdog is the product
For a continuously running strategy the most valuable component is not the signal generator but the process that notices the signal generator has stopped, or is producing nonsense, and flattens. Uptime engineering and trading strategy are the same discipline here.