Wordpress is quite unnecessary now, but so are other CMS's as you can just use AI to make a CMS with exactly the features you need from scratch. AI can also point you to existing frameworks that completely replace Wordpress functionality like page builders and then help you deploy them to the cloud, often as static sites that cost literally zero money to host.

I still have a WP site that I've used for the last ~7-8 years and I am planning to migrate off it in the near future.