windowscentral[.]com/software-apps/bing-blocked-by-reddit-breaking-search-results-for-everyone-but-google
Actually they just edited the robots.txt file -- there's nothing stopping anyone from ignoring it, as reportedly Many AI companies do.
Note that the spokesperson did not deny the existence of a partnership between Google and Reddit, just if the partnership is the reason for Bing being blocked. Google's deal with Reddit was reportedly worth $60 million and provides Google with real-time access to content from Reddit.