The best reason to unfollow X (formerly Twitter) users is that you don’t want to see what they post in your feed anymore. They’re annoying, they’re spammy, or they make you think angry thoughts when you see them cluttering up your feed.
How to unfollow en masse on Twitter
A bad reason to unfollow someone on X is if they don't follow you back, even though that's why a lot of people unfollow others on X. In the early days of X, this was pretty common. If you followed someone, it was expected that the other person would follow you back.
Not so much now. The use of X has grown exponentially and it’s unreasonable to expect everyone you follow to follow you back, especially celebrities. Spammers and bots are now in abundance, so people have turned off notifications when people follow them. So if you think someone isn’t following you out of spite, it might just be because they have no idea who you are and that you’re following them.
That said, no one is obligated to follow you back on X, and it’s unrealistic to expect them to. It’s good practice to occasionally check your newest followers and follow back anyone you want to hear more from. However, it would be unproductive to follow them all; your feed would be flooded with irrelevant tweets. This is the same situation that applies to everyone you follow.
