Plus, voicing your opinions helps a lot to filter people (I'm struggling a lot with this though).
This is massive. "Filtering" is the perfect way to put it. If you don't risk saying something potentially disagreeable, then no one will ever know who you are.
That goes for both repulsive and inclusive ideologies, I guess, but I definitely prefer the latter (this is an example of one of your "filtering" statements - now spectators to this conversation know I value inclusivity).