If you happen to use Firefox with uBlock Origin adblocker, you can use that too. It's a bit more flexible as you can block posts and/or comments separately. I believe this will block in search as well, so keep that in mind. Works great for doomers and shills. kek

1. Click uBlock Origin icon.
2. Click the little gear icon in the bottom right to open the dashboard
3. Click on 'My Filters' at the top
4. Add the two lines below and replace 'username' with the actual username
5. Click 'Save'

greatawakening.win##.comment[data-author=username]

greatawakening.win##.post[data-author=username]

If you want to add another username, just edit each line to add another user like this:

greatawakening.win##.comment[data-author=username],[data-author=username2]

greatawakening.win##.post[data-author=username],[data-author=username2]