**** This is not in defense of BD. It's just for clarification****
Ok, so... some things to consider when discussing renders, total renders per update, daily render counts and such...
First you can not look at a daily goal of 17 or 20 renders (which isn't really that bad) and say it's been 100 days so the update should have 2000 renders. It just doesn't equate that way.
Sometimes a render is flawed in a way that only shows up after the image is rendered and then it must be corrected and rendered again. this happens on roughly about 15 to 20% of renders, so that detracts from that 100 day = 2000 render count.
Next, it also depends if the AV has animations in it. If it does, then 1 second of animation equates to roughly 30 renders. Most Devs count animations and render totals separately, ie. 400 renders and 12 animations(which would be around another 360+ renders)
Also, as stated before there is scene building(which is extremely time consuming), and coding, and a host of other things.
So just be aware that not everything can be easily quantified by someone looking from the outside.