I think the pixel art was a bit much in this article but I'm not against them in general as filler in blog posts. I think a good rule is to just toy around with prompts a lot in general and then if you happen to find an image that really stand out as nice looking alone (as a cool piece without any text) then that's what I'd consider adding somewhere in a future text. But not like "ok I have an article, now I need 5 images to go with it let's quickly pick the 5 first ones I get from a simple prompt". Just my perspective and take on the matter. :)