The challenge is, in a real org of some size, you’ll suddenly get marketing or customer success asking you for commitments that are very far out, because ad slots have to be booked or a very large customer renewal is coming up.
And some of the normal coping mechanism (beta-branch that spins off stable feature to the general release branch) don’t work for all those requests.
Try as you might, you are going to get far off deadlines that you have to work towards. Not for everything but for more than you’d like.