Excuse me for sounding daft, but I think the intensity with which you are confronted with these opinions has changed drastically. I think you're purposefully being a bit ignorant here; no one (viz: 'they') wants to cancel opinions they disagree with. However to think that false information has the same platform today that it had 50 years ago is also just plain wrong-- and whether you agree with it or not, it does shape the public discourse these days. Unless you want to erode discussions to a point where its a battle of who can fabricate the biggest claim (true or not), you're going to have to accept that in a modern information society we will eventually need some form of controls.
Case in point: https://twitter.com/0x445442 (Seems you have a problem with "Leftists" and like to retweet right wing tweets)
Back in the day, the internet just laughed at "stupid people". Now it tries to ruin their lives for daring to say something edgy.
"Information controls" is one of the most horrific concepts I've ever heard of.
"Information Controls" -- I see you are making some kind of boogey man of this, but this already exists in some forms already (Slander/Libel/etc). I don't know how anyone can seriously argue that anyone should be able to claim whatever they want with no repercussions (especially when that anyone holds a position of power -- you could easily fabricate a story with false pretences to justify further power grabs).
Didn't some guy literally get canceled because he posted a study that discussed the effectiveness of violent vs peaceful protests?
random search: https://twitter.com/jenbrea/status/1271148784316108800?lang=...