Perhaps the divorce is a result of internal disagreements? The news of the divorce came out shortly after Bill Gates refused to share Covid 19 vaccine tech with developing countries like India. And Melinda (not Bill) admitted they "hadn't really thought through the economic impacts" of lockdowns.
There is social media speculation that the divorce might not be quite what it seems, though. If it follows the Bezos divorce model, it could be more a tactical matter of splitting the $150-billion fortune to protect it from Biden's capital gains tax? The two richest women in the world (Bezos and Gates divorcees) will have reached that status by divorce.
The Gates announce that post-divorce, they'll still run their Foundation together, so there's no reason to believe the divorce portends substantial change.
Who knows, perhaps Melinda might separate from some of Bill's more awkward moments and build her quasi-feminist cover. Africans remember her "women and girls" white person's burden schtick, some of it not politically correct in today's terms, after she "fell in love with Africa" during the 1990s after a trip with Bill.
UK government has invited non-doctor Melinda Gates to speak on pandemic health at the upcoming G7 conference in Cornwall, rather than a health specialist from the World Health Organisation. Her name is listed as the official G7 speaker, not Bill's. Their private Gates Foundation corporation is listed as a prime partner in the G7 meeting: corporate-state partnership