It won’t. Some people will scream bloody murder, most people will ignore it.
SO was in decline anyway. Most answers you’ll find are several years old and outdated, because some idiot thought the new ones are duplicates.
So now a few people will leave, the spamming idiots will keep spamming the platform with low effort nonsensical answers and its relevance will dwindle just a bit faster.
Look at Reddit. Last year there was a huge outrage and today it’s pretty much the same as before.
Most people don’t care. Most people feel so powerless, that they’ll accept every privacy scandal, every exploitive business strategy, every sellout of their platform.