> What about Instagram's "personalization" wouldn't work as a standard web page?
Really nothing. But for most people Instagram is primarily a mobile application and comes with the usual experience of a mobile application. Transitions, fast reactions, no "whole page" reloads, etc.
Continuing this experience into the less frequently used browser version only makes sense, especially given the fact that Instagram's tooling allows for a relatively easy transfer (iirc large parts of the mobile apps are implemented using React Native)
Really nothing. But for most people Instagram is primarily a mobile application and comes with the usual experience of a mobile application. Transitions, fast reactions, no "whole page" reloads, etc.
Continuing this experience into the less frequently used browser version only makes sense, especially given the fact that Instagram's tooling allows for a relatively easy transfer (iirc large parts of the mobile apps are implemented using React Native)