Here's a glimpse of the author rewards distribution just prior to HF19:
I am not a data scientist, and this chart was posted by @aggroed, who stated it came from @arcange. I have repeatedly requested more current data, in order to better ascertain the impact of HF19, to no avail.
I suspect the situation hasn't improved.
Yes, I think so. HF19 states that rewards are proportional to the stake, the distribution of stake is skewed in the first place!