Maintaining an array of objects without useFieldArray

[ondrejpar]

Hi, I need to maintain an array of objects in the form. Each object has multiple controls and even nested objects and arrays.
The useFieldArray API does not fit my needs for multiple reasons (I don't really want to go into details as it's quite difficult to explain).
Is it legal and supported to just not use useFieldArray and just use setValue to manipulate the array, even sometimes replacing it as a whole?
I understand it will lead to unnecessary re-renders and that I'll need to keep a list of unique element IDs manually, but I'm willing to do that.
Thanks for answer.