Blocking means other person can not see trump's tweets. I believe Trump can always mute other people.
Let us consider the following scenarios :
- Trump blocks only black people on Twitter. - Hawaii's missile alert systems issues a real missile alert on their Twitter but Mr X does not get it because he was blocked by them. - Mr. Joe goes to local DMV to get a driving manual. DMV clerk closes the window on his face and refused to give him the manual.
How is twitter scenario different here ?