That's debatable. Every best-practice arose to solve a real problem within a context, and is only "best" if that context applies.
If you apply best-practices without a regard for that context, you end up with a dull, cargo-culted checklist of must-haves to beat people over the head with, without deriving any true human value.
The compiler of this artifact is making a judgement call[0] of what best practices apply somewhat universally (to every "decent website"). I haven't yet been convinced of their standing or judgement to make that decision.
[0]: Charitably, I'm assuming they have, rather than, e.g. delegating the judgement to an opaque model's weights.
Some requirements have force of law, e.g. complying with GPC in California or Colorado. So do accessibility features in many jurisdictions. Some are just basic decency, like providing alt txt for images.
The approach of marking items as required/recommended/optional addresses your concern. Too bad this specific checklist is LLM-generated.
I saw this posted on LinkedIn[1], where the author wrote:
> I got tired of pointing at six different sources to back a single recommendation. WHATWG for HTML. WCAG for accessibility. IETF for headers. schema.org for structured data. MDN, web.dev, Google Search Central for everything else.
> There was no single, opinionated, platform-agnostic spec for "what does a modern website actually need to do?"