Don't forget that public opinion and the media landscape are quite different in 2025 from what they were in the 2010s when most prior studies on WP bias have been written. Sufficiently pertinent (sadly this isn't synonymous with high quality) conservative and anti-woke content can reach wide audiences, particularly when Elon puts his thumb on the scale. Besides, to my knowledge, none of the prior attempts at studying WP bias has even tried to make a big enough fuss to change said bias; the final outcomes of the studies were conference papers.