This is an interesting detail - I was not aware Microsoft's pricing increased. That said, would this really increase complexity substantially?
And as a nitpicky aside, if this was done in response to Microsoft's cuts, I should really have found out about this from DDG themselves, rather than a github repo commit. Though it does change the intent quite a bit.
Bing buckets queries into pricing tiers based on complexity.
Why on earth would DDG have any obligation or interest in telling you about their supplier pricing? You found out something that has little to no material impact on you from a post on a nerd site.
And as a nitpicky aside, if this was done in response to Microsoft's cuts, I should really have found out about this from DDG themselves, rather than a github repo commit. Though it does change the intent quite a bit.