I think this is a partial attribution error; the goal is to make money by capturing attention and selling it to advertisers. The fact that strife is one of the most effective ways to do so, and the companies appear utterly unconcerned about the resulting damage to society makes it look like strife is the end goal, but it is merely a means to make money.

They would change their algorithms immediately if large advertisers applied financial incentives. We've seen some of this with Youtube's policies leading to videos with censored profanity where its use was previously normal and neologisms like "unalived" to mean killed.

Musk's Twitter may be a partial exception since it's decisions are now driven by a single man's preferences rather than an amoral mechanistic imperative to increase shareholder value. That doesn't seem to have improved things.