And on a second thought though, what if they are the ones who decided to turn off the captcha, so to enable them reduce the reward users get from playing the free roll?
You don't have to pay the free roll. You can solve the captcha and play the free roll without any cost.
Whenever you want to paly the free roll, you have to options. First is to solve the captcha and second is to pay the cost with reward points.
Since there are surely people abusing their faucet, I can't really blame them for adding the captcha.