You've explained away the crux of the problem without even identifying it as a problem. Queues are an inappropriate construct for managing work. If something urgent & important takes weeks to even get looked at then there is a prioritization problem. If something that isn't urgent or important even gets worked on at all then there is a commitment problem. Based on what OP has described, the company is likely doing a lot of work they shouldn't be doing and working on things in the wrong order. Similarly, the work OP is doing may be much less important than they think it is.
Now, I agree that it's important to understand how the system works, but IMO it's equally as important to understand how it can be improved. Long lead times is definitely not a good thing, and also not a foregone conclusion at big companies.