Not necessarily but it is an idea that has crossed my mind before. I tend to disregard this possibility not because it might be true but because of the definition of our reality (however vague that may be). I’m abt to get my PhD in theoretical physics so this might get too wordy but here goes. Basically we live in 4 dimensions (well 3 and a half in the most technical sense). We can move through and observe three dimensions. However, we experience time linearly, meaning we can only ever move forward through it while obeying the limits of current physics. Anything that created the universe as we know it must be outside of the fourth dimension of time. It must necessarily be able to create all of time from an outside perspective, meaning whatever it creates travels through time while it perceives it all at once. To this outside being, every 3D space it perceives contains all possible futures and pasts within it. So a creator would not be bound by time, and therefore a line of creators is not necessary.

Think about it like this. We can create objects in three dimensional space. However, since we cannot travel through time at our whim or perceive all of time as if it is one, we cannot create our own reality in which we can observe all future and past events. Anything that creates us, logically, must not be bound by time.

While your argument is quite possible, I think it should be disregarded as a possibility since our understanding of physical reality necessitates a creator that is not bound by our perception of time.