alt Hacker NewsThe problem is that it doesn't solve the network-effect problem.
People aren't on WordPress because of WordPress.
They're on WordPress because of WooCommerce, a million themes, BuddyPress, integrations for every stupid internal business API on the planet (many of which are terrible and were written by an idiot with a crayon).
The APIs will have no testing because they are bad. In many cases the WordPress implementation of the API written in the codeblock, ran on page-load to the pain of the person responsible for SEO, is the API contract.
And yes those plugins are also terrible, but they solve business problems, even if they are tech problems.
You can't just launch a better wp-core and expect it to replace any of that.
EmDash needs to actually run the existing insecure WP plugins to takeover.
You seem to have missed the point. This is intended to be more secure in a new world where exploits will be cheap to discover. The factors you mention won't keep people onboard if systems are compromised every day in too many ways for fragmented security teams to keep on top of.