Is it worth creating a 1-page site ?

Your username always brings smile on my face.

Testing new things can result in really good results. I have a listicle but mostly promoting it on ppc and it gives more money than offer.

The short answer is yes, it is worthwhile to create a 1-page site. Large sites are sometimes overworked and become complicated,
but a 1-page site has fewer features and requires less time to manage, You can build high volume backlink for 1 page and it will be very beneficial.
Websites with a small number of pages that are also well-organized are also easy for users to navigate and search through.