Twitter isn’t dying. The users and content is still there. The people going to Mastodon are the niche group of techies. Mastodon isn’t for your casual or average twitter user.
I think news and ads ruined social media today. I do miss the days of MySpace and people used to log on , hangout and message each other. You used to to connect with your friends online. Today, social media isn’t really used like that anymore.
Aside from political views, another social network will not help anything and is only another useless app to install.