I'm not quite sure I agree with the title. Having access to code when you need it is probably a good thing.

But I think code is, in general, something to be avoided when declarative approaches are available.

Declarative is easier for a computer to understand, it restricts the inputs to one domain the computer can deal with.

You don't get the same classes of bugs with declarative. You could even do things like double checking with machine translation and flagging anything that doesn't match for human review.

Plus, you don't need a programmer to do it. Security issues go away. You often achieve very good reuse with code only existing in one place without language variants.

I'm sure there are great uses for this, but I have trouble thinking of even a single case where I'd prefer code to data in general.