To be honest, the exo-stuff is a game-loop that will really only appeal to certain gamers. If you like exploring planets looking for the various bits of flora, that gameplay works just as it did before. What's changed is the payout and rank thresholds. If you move the pay, you also have to move the thresholds, but as is only right and proper, nobody is losing a stated rank due to this change.
It does mean though that some people (like me) now have a rank higher than it should be based on the thresholds. Practically all of my exobio stuff was done before the recent updates so any credits I earned there will look small next to the new row of thresholds for exobiology. As a result, I expect to sit at 0% geneticist for some time.
It doesn't really matter though. I did the exobiology stuff because I enjoyed doing it - not just to push up some pixel progress bar.
Those of you that say you aren't enjoying the exo game loop - I feel obliged to ask - why are you doing it then? There are so many other parts of the game with different kinds of offer. Why not play the bits of the game that you enjoy most?