Blocking a rival browser/search engine... hmm...
Not to defend Microsoft here, but these kinds of large-scale blacklists are almost always riddled with errors and fuckups from the rushed staff who are assigned to quickly review domains to meet their quotas.
Haven't seen any other search/browser and Brave/search has been working fine for as long as we've used this web filter... until this morning
Not trying to excuse Microsoft, but there's other conceivable explanations (incompetence) here other than the obvious "Microsoft is trying to throw friction onto a competitor's business" (which remains a possibility, of course)
But it's pretty gross either way that these kinds of filtering lists would have such errors. Brave is probably ok either way, but what about a random small business that wrongly gets put on such a list? People are harmed by this level of carelessness from companies like Microsoft.