I’m not advocating against a seatbelt, I’m advocating against not wearing it, “because I am confident that I can hold on to something in case of a collision” or similar stupid reasons. Expecting that blocking does anything to hide public posts that you can simply open in another browser (or in the same browser in private browsing mode) is not a seatbelt, it is the equivalent of a slightly stronger handle on top of the car window that is being advertized as a feature to protect you in case of an accident.

This change first and foremost makes it clear that that handle does nothing meaningful and that you should wear an actual seatbelt (follower-only posts, ideally with restricted followers) instead, if you are worried about a collision. Twitter is a public forum. You can’t tell people to leave you alone, shout with a megaphone across the marketplace and then be annoyed when they hear you. If you don’t want them to hear you, don’t use a megaphone.