People might not like social media, but the ability to discover content on there and keep track of it is just lightyears ahead of the regular old Web.
Another big problem is the permanence of the content. Hosting your own content today is easy. Ensuring that it is still online 20 years from now is hard. Worse yet, even if you maintain your site, URLs still change over time, links break. An IndieWeb build with regular Web tools is just going to be a lot of 404 and "DNS address could not be found".
We've been there, done that. It doesn't work. There is no point in trying to repeat it without some key innovation.