> Later on I unfollowed 90% accounts and stuck to those accounts which strictly tweets only about programming, math, history and other such stuffs in robotic manner (I.e. without any hidden agenda or connotations). I unfollowed everyone who have even a slightest chance of tweeting about politics. Also I stopped tweeting and replying to anybody.

This is the best way to use Twitter, especially your decision to not post or reply to anyone.

We're all prone to say something stupid on online, and if we attach our real identities to those statements, like many people on Twitter, someone somewhere will weaponize it. And, if you have enough "clout" on Twitter, something you tweeted yesterday, or a decade ago, can end your career. This is the world we live in.