Consider this more of a technical curiosity.
For those who are interested, I tested the activity indicator. I left my account running in the background on my computer and watched the activity on my mobile. And it jumped practically the same as Maimy's. The maximum inactivity was 5 minutes, but in simple terms, the activity was constantly jumping from active to seen before. So for now, I think that 2-3 days of this status doesn't mean anything, but if it's going to be long-term, I would change my mind.