However I do not remember any period when 1 reward point wasn't equal to 1 satoshi, that has always been like that, ........
The reward point hasn't always been 1 satoshi.
Each reward point is worth 3.75% of the base reward on the faucet (Click
here to see the reference.)
The base reward is 0.002 dollar and each reward point should be 0.000075.
Given the current price of bitcoin, each reward point should be 0.2 satoshi.
Since there are only 8 decimal places for each bitcoin on freebitco, 1 RP cannot be less than 1 satoshi.