Compared to what? Seems pretty inadequate compared to, say, 500m an hour massacre stacking... or road to riches, or AX combat, or high value trades, or... well... you get the idea.
You dont easily get 500m per hour with massacre stacking (500m also seem an exageration_for_effect - 200m per hour is more likely, but even that is not easily attainable)
To get hundred of millions per hour you need a full set of things to fall in - a very good ship, very good combat skills (flying and aiming), being allied with all the factions, being in a system that favors stacking and that offers missions in a small system, so you dont have to run over 200k ls to reach the mission POIs
Exobiology has no such requirements. You just need an artemis suit and to head out in the black - fss systems, go land on a body with bio stuff
I'm not against the increase, i just think the current increased levels are way too much