Additionally, an ill-conceived tax change, Section 174(b), was used to make the Trump tax cuts look revenue neutral. It then took effect when Congress blue screened after the midterms before it could repeal the change. That has made it more expensive to bootstrap software companies and _way_ more expensive to do so with remote workers, so the alternative to raising money is less viable right now.
Obviously no one knows for sure what is going to happen. But if I had to guess, we won't see as much of an increase as you might expect. Americans rely on jobs for health insurance so startups are risky not just for the programmers but also their families. Pre-A startups aren't really a substitute for a funded job that can buy health insurance with pre-tax dollars for anyone with significant experience: you usually need a spouse whose job provides healthcare, and if they're in tech too that is a precarious position right now.
What we need for a vibrant startup scene isn't just workers: it's workers + capital.
Instead, I would bet we wil see more companies in sectors of the economy that are doing well build in-house tech teams as experienced talent becomes available. Which will have the challenge that working in an established organization is nothing like a startup and working at a FAANG company with huge projects planned up-front doesn't particularly prepare developers for working at a non-tech-focused company. To stand out when going after those kinds of roles, I've been recommending that people I know who are out of work experiment with XP- or Lean Start-style techniques. Both of those methods were designed for direct customer collaboration, and will set the developers who know them apart.