Not for any players, deposit bonus is always designed to give bigger edge to the casino than to the players.
5. Every time you wager 6× your deposit, 10% of your bonus hits your balance. No waiting around for the full amount!
Unlocked increments move to your bonus balance and can be used for play immediately.
Unlocked bonus funds cannot be withdrawn until the full bonus has been released and wagering is completed.
In the beginning they say "no waiting for the full amount" but in fact it is useless to have increment unlocked bonus because it is added to bonus balance and it cant be withdrawn until the whole wagering requirement is completed.
Because if it is actually incremental unlocked bonus, it will become complicated for their business, including more risk. There is chance, even very low chance, that users can win big with an incremental unlock bonus part and fill that wager requirement to withdraw money. If that very small probability comes, the user even does not need to use all remaining incremental unlocked bonus parts while already won big and withdrawn big fund.
To be safe, and as business, they want to control the game, minimize risk for their business, it's understandable.
Again it is not surprised to discover that there are terms, not hidden, but can beat users if users don't spend enough time for reading and actually understanding it.