When I visit the root domain I shouldn't be greeted with a marketing splash page, you need interesting content in the user's face right away, entice their curiosity and drive the user to explore the site... even as a fellow developer, my first instinct is to abandon the page as soon as I'm greeted with the cliche startup marketing page. Consider the user experience when I visit reddit.com or news.ycombinator.com or any other link aggregation competitor. What you have now is a tech demo, not a platform. Sorry if that's a little harsh, but I mean well! Good luck!
My original plan was to pay for ~100 users accounts and seed the site with content for a proper launch. Given what's happening today though, it felt at least pertinent to show off the current state and get some feedback.
The balance between splash page on landing / landing on content is a hard one, but I think you're right. I am worried though that without conveying the initial business model, it'll be harder for users to understand that this isn't a direct reddit clone.
It's not easy, and the value of an expert UX designer really shines when walking the tight-rope between informing and annoying your users.
Also, consider investing in reliable A/B testing infrastructure if you haven't already. One of the biggest mistakes I've seen is trying to grow a product while driving half-blind based on napkin sql queries as metrics. Understand who is using the site, how often, when they are experiencing errors, and which types of changes actually encourage growth KPIs - but be careful, loading up the site with 3rd party trackers and intrusive js will introduce bugs and kill site performance - another balancing act hehe.