Many (I actually think most) people use blocking not for harassment, but for blocking people whose opinions they don't like without being harassed in any way. B

Many (I actually think most) people use blocking not for harassment, but for blocking people whose opinions they don't like without being harassed in any way. Basically as a tool to keep their echo chamber echoey. So the possibility of blocking has both advantages and disadvantages. The question is which one dominates.