Sounds like it. I was shadow banned at least twice, both times for just trying to respectfully post facts.

The first case dealt with Black Lives Matter. I'm white and I tried posting some tweets on Democratic party racism towards black people. I was no way posting anything racist or even criticizing black people themselves. These tweets didn't show up.

Then on another occasion I posted some thoughts on a very prominent white liberal, using links showing a news story written about him. I thought they showed him to be a hypocrite. For months after that, any tweet I wrote with links in it was shadow-banned.