What if the client asks you to give them a product once per year. Does Agile recommend telling them no, turning down their money, and reply, "Sorry, but Agile says I have to delivery the product continuously."
The two words "continuous delivery" mean to deliver something in such a way that the customer doesn't experience gaps between the release of improvements, upgrades, fixes, additions, or desired changes, so that they are not staccato changes at major discrete instances.
Crucially, the customer, not you, gets to decide what "staccato changes" and "major discrete instances" means to them.
If the customer says to you, "Receiving these changes any faster than once a year does not help me" then "continuous delivery" for you, in that case, does not mean the same thing as the modern buzzword ideology of continuous delivery.
Nonetheless, you could still use an Agile process in that scenario. I wouldn't recommend it though.