That's a fair point, Twitter's certainly not what it used to be. That said, there are still a surprisingly number of large companies using it, and a fair few them still run ads there. Not sure when they'll move to Mastodon/Threads/BlueSky/whatever, but it hasn't seemingly happened quite yet.

Either way, I'd say the best advice in any case would be "be very difficult to ignore, to the point the company's reputation takes a hit if they don't resolve the issue".