I think it's really hard to get started in tech, and you can of course get benefit from actually studying the technologies and tools you'll be using in your job ;-) A certification is really good if you have a very specific use case and you need someone for a narrow type of work. I almost never want to hire someone for a narrow use case though. But if I was hiring contractors to fix something very specific on only aws say, then maybe it would be useful.
Of course I'm just some random person on the internet; getting a few certs might help at the start, listing things on your resume that you worked on is much better as an aid to getting interviewed and hired.
So generally I'm looking for creative problem solvers that do open source work and learn as they go on their own. I've just seen over my career that people who play the cert game are usually on the other end of this spectrum. I'm obviously painting in broad strokes here
How I build teams has worked really well for me, but there are lots of great ways of building teams that create value which are likely very different from mine.