With high PPI screens more common especially on mobile, you can probably go either way, unless you know you have a lot of low PPI desktop users.
Focus on finding a font that's readable that fits your branding.
Maybe you can find a serif font that works for more types of articles.
Or maybe go with san-serif for low PPI screens and serif for high PPI screens.
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Serif vs San-serif is unclear according to this 2012 usability article.
nngroup.com/articles/serif-vs-sans...
With high PPI screens more common especially on mobile, you can probably go either way, unless you know you have a lot of low PPI desktop users.
Focus on finding a font that's readable that fits your branding.
Maybe you can find a serif font that works for more types of articles.
Or maybe go with san-serif for low PPI screens and serif for high PPI screens.