Heh, no, I work in deep tech. The mistake most people make (and I used to make) is talking about the tech. Being "deep tech" you would think this is the central point but it really isn't. There needs to be a compelling narrative around why what you are doing (technically) is important but the technical details just need to check some boxes. In essence, you are painting a visceral but credible picture of the world that will exist if you are successful.
Storytelling is a critical part of fundraising. You can generate wildly different outcomes from the same set of facts.