There's a guide to it somewhere or other. They're moving the goalposts though. With the influx of voatfugees you'll need 6 gorillion points to become autistic.

https://poal.co/welcome

It's explained in the welcome tab on the bottom left of your screen, or you can click the url i provided.

Newbie till yellowfag then orangefag then red baron (red fag) then blue balls then way past lvl100 is red pill. Currently aou is the only one who made it that high.

It doesn't restrict speech. Just makes the shills easy to spot and makes attacks on the site (via abuse of its features) harder to execute.