Well, I don’t use Twitter. So that’s all you.
But blocking accounts have been a thing for decades. It’s not a new concept.
In closed systems like messengers, where you don’t see any content unless logged in, yes. There, it works brilliantly. But on Twitter, this is like cutting out something from a newspaper when there’s a news stand right next door.
Twitter has DMs, plus it helps by not allowing that person to reply unless they create a new account.