I hear you on "don't build your own design system"... but Datadog's got a really complex UI, I think they've definitely graduated past the point where something

I hear you on "don't build your own design system"... but Datadog's got a really complex UI, I think they've definitely graduated past the point where something like MUI would be a good choice (and obviously they have the resources to do an internal design system, and do it well). For Datadog I think it makes sense.