Thanks! In retrospect, that doesn’t seem like a big deal. I guess I’m effectively paying $1/year for the option of being able to change authoritative name servers to whatever I want (and the privilege of using Porkbun’s presumably worse interface).
I’ll admit I was already a little biased against Cloudflare because one time I got caught by their infinite captcha (maybe due to my OS not being up to date because it was an old computer? I’ll never know…).
If that’s not the case, then I’m definitely misunderstanding something about DNS!