How about I rephrase it.

More than can be reviewed for the time and money they’re willing to spend.

Even before AI, they absolutely could’ve done it.

this argument still adds nothing to discussion because companies clearly want to spend zero but earn everything, the only amount they are willing to spend is on lawyers working on shielding companies from any responsibility including obvious cases of negligence

Yes, and I've also seen the absolute shitflood of horrible ads. Every time I see somebody else's system that isn't running ublock origin or similar... They clearly are prioritizing the ad revenue over any actual "don't take a steaming dump on the Internet" ethical priorities.