So you want your brand advertised on a platform known for child exploitation, such as Instagram? Or how about the platform that's taught the world over how to steal Kia cars?

You're just making my point. These advertisers don't care about whether individual users on a platform are awful - they care about whether the platform itself is keeping their brands safe. Musk has shown he can't be trusted to keep their brands safe.

Hmm. Again, where are all the From The River To The Sea rally people posting their stuff?

Again, it's not about whether the users are good people or bad people. It's about whether the company that is selling the advertising space is showing that they can be trusted to treat brand safety as a priority of the company. They're not trying to use their ad buys to make the world a better place, or advance an agenda - they have business concerns about how X treats advertisers that they don't have about other platforms.

However, by leaving huffily like this they're playing to the woke virtue signaling crowd in an effort to score brownie points.

They're not. Once more, every advertiser that's leaving now is an advertiser that stated with Musk for the last year. They stayed with him when he stripped down the Trust and Safety teams, they stayed with him when he changed the ToS to keep Hateful Content on the site. They stayed with him, because (in part) they accepted his implicit assertion that they could keep their brands safe even with the changes he was implementing. They're leaving now not because they care about scoring brownie points (those companies all left in 2022), but because Musk burned them with his personal behavior and defective algorithms - and then told them to F- off.