Whether to boostrap or raise VC for SaaS businesses?

I was looking at few of the growing bootstrapped SaaS businesses and saw that some of them are growing about 30% YoY and profitable.

Given that AI is making builders more productive, for building a SaaS, is VC funding even required?

Edit: source of the data https://goldenpineapple.substack.com/p/the-fastest-growing-bootstrapped