It’s well known that each person has to have a different account for each of those big-tech services. Whereas in the fediverse, the original idea was that one account can traverse multiple services. The problem as the OP explains, is that it may seem you are following your friend’s account, whereas actually you might see just a small fraction of it, and not be aware that there is more.
I think OP has a valid point - it’s not about experienced users, but newcomers to the fediverse, who may think they are following an account, when actually they only see a small part of it - there could be some indication of what’s missing.
“…at a rate of roughly 0.05 percent per day … would take a very long time” … but by my quick calculation 0.9995^3650 is 84% per decade, which is not long. Almost instantaneous on a geological timescale - and think how much the world changed when fungi learned how to digest lignin in wood - ending the era of coal-forming swamps.
Indeed - why so low in most of Poland, compared to neighbouring regions with similar climate/crops, also I wonder if tibetan plateau is really so great for Fungi? Or are these artefacts from the machine-learning algorithm?