It doesn’t sound like the type of iteration matters at all.
If your leadership is good and competent, they can drive the company any way they feel and have it work.
The most productive I’ve been in my career was when my PO put all tasks that needed to be done in a Google sheet and the whole dev team spent a week just picking tasks off the list. It ended with us shipping our app on time.
No planning, no grooming, no nothing. It was a high trust, high ownership team.
I miss those days.