Netflix is ultimately responsible for what they put on the platform, for delivering a consistent product to their users, and for setting expectations.

Netflix is exceptionally shitty at letting people what is leaving their platform and when, and even letting them know when the shows they saved or were in the middle of watching have been removed. Netflix has been around for ages but we still have to depend on third party websites to tell us what's coming/leaving. Some items will have a "leaving soon" banner on the thumbnail, but that's only good for shows netflix decides to push at you. There's no section or search that will find all that stuff (searching for "leaving soon" will show you some of them)