This is hopefully the correct answer. In the tech community there are a lot of "shiny" buzzwords that can be very distracting to the larger concerns, and many developers (myself included) have developed large quantities disdain for them over the years.
For reference, when I see an otherwise "light" resume loaded up with a bunch of words like React, Node, Kubernetes, Docker, <any cloud product>, etc., I typically have an adverse physiological reaction and quickly move onto the next resume. Most of us are looking for substance in our work - meaningful value added towards the business or hobby interest being pursued.
That said, I am not against those who pursue learning of various shiny technologies as a hobby in and of itself, but I would caution those who are seeking higher orders of achievement to focus most of their energy on the core problems they are hoping to solve.
The buzzwords. And the apparent assumption that you can just “pick up” programming. Going from 0 (or CS50 online) to producing useful code will take several years at least. And as another person commented, idea, market, people, and execution make or break a startup, not programming languages or buzzwords such as blockchain.
Maybe find a technical co-founder who already has the technical expertise.