bing accounts for your history in promoting search results. and has a different algorithm to google, inevitable really because google's algorithm is secret and unknowable.

the problem is that google WANTs to promote forums because forums are reliable sources of truth, but with automation all they can do is look for subject authority markers (incoming link count, keywords, text references on other highly authoritative pages, etc)

SEO as an industry is about optimizing those markers to appear above "organic" results in a search page.

changing the markers only means the SEO industry will adjust to target the new priorities, but forum operators are always the last to optimize. it's a fundamentally unwinnable game