What is the problem that Stacker News solves in the short term and what is the thing it solves in long term? "This is the problem" slide and "This is the solution" slides can be quite powerful. If you get the person you are presenting to understand that, they will be on your side.

To hint some, if you think about different platforms, like Twitter, Hacker News, Reddit, Mastodon... there's a lot of nuance, but they each solve their particular niche and they do it well.