This addon is absolutely essential to use current-state, Musk controlled Twitter and to limit/stop the viewing of hate speech, negativity, misinformation, etc. often shared from Twitter Blue ("checkmark" or "Verified Account") users and more.

As of this writing I've blocked over 14k checkmark accounts (since April-May) which will continue to increase as I use twitter normally. I've personally recommended Blue Blocker far and wide to anyone who uses Twitter on a regular basis.

The only potential downside to this addon that I've noticed is that some users, such as artists and various creatives who do utilize Twitter Blue *only* to increase their reach, will also be blocked; obviously this is by design. You will have to follow/unblock these people manually if not use the "safelist import" feature and/or adjust other options.

If you're looking for a better, less negative Twitter experience and don't yet want to abandon the platform now or in the future(???), Blue Blocker is the addon to get.