What was revolutionary about Web $2\mathrm{.}0?$

Anyone could create content to the web as long as they know how to set up a web server.

Anyone could post content to the web, without the need for understanding HTML or web$-$ server technology.

Anyone could create content to the web as long as they know how to get a domain name.

Anyone could create content to the web as long as they know how to create web pages in HTML$.$