I think you can but you will get no interaction. No one (relatively, not literally) cares about “nice” or informative - they care about things that make them angry or otherwise emotive.

I’d also add that no one (again, relatively) reads anything, anymore. A couple of paragraphs and you’ll see your engagement drop off a cliff. But a quick, “witty” slap? A stupid pun thread on Reddit? Easy money.

I think your point is generally right - not trying to disagree, but I think these platforms are simply effective tools to mirror back their users and what their users want, rather than the inherent, specific problem themselves. That is, it’s not Twitter that’s the problem - it’s that Twitter users really like the behaviors Twitter rewards.