It's because Collins are almost certainly no longer involved. They were paid to do the rebrand and have moved on. If anything they're probably consulted on for things like landing page refreshes, but not actual product design.
Let's assume Dropbox designers were as horrified as everyone else and over time there will be a gradual toning back, as shown with Arlen McCluskey's plans page.
It's because Collins are almost certainly no longer involved. They were paid to do the rebrand and have moved on. If anything they're probably consulted on for things like landing page refreshes, but not actual product design.
Let's assume Dropbox designers were as horrified as everyone else and over time there will be a gradual toning back, as shown with Arlen McCluskey's plans page.
Common sense prevails!