Early-stage is not about speed

I’ve long been wanting to write about speed. I am developing my 4th startup in solo mode, and I cannot go fast :-). Is it an issue?
A common perception is that speed is what makes a startup succeed. It’s all about speed and removing everything that can slow down execution. I often see entrepreneurs convinced that if they could go faster, they would succeed faster.
Really?
I think speed is critical once you have reached Product Market Fit and understand how to scale. Before that, speed can make you die faster!