I think this is low quality, but I don’t see why it’s spam.
Can you expand more on why this is low quality?
I started using Eleventy for some simple stuff.
The two attractions I remember when going through the choices were:
a) If I am using a template engine it needs to be something that I already have to use somewhere else
And I use jinja2 in ansible, so nunjacks  was a fit to this criteria
So there was a project that helped me to get started (although I imagine many static site generators have these boilerplates)
I actually also was looking for something that by default did all-the-right-things for accessibility.
But it seems that this not a function of a static site generator.
I agree with other commenters, that I would not start Eleventy from this post, but instead from a good working example.