Easy account switching is the sort of thing that browser extensions would have been developed to cover in the past, something like like RES for Reddit or XKit f

Easy account switching is the sort of thing that browser extensions would have been developed to cover in the past, something like like RES for Reddit or XKit for Tumblr. That's obviously less relevant when a majority of users are using desktop or mobile apps rather than browsers, but a plugin interface even for closed-source commercial desktop software used to be far more common than it is now, leaving users dependent on the development team to add features and usability. I assume this decline is due to security concerns, wanting to be able to develop faster internally rather than needing to continue supporting old APIs for external developers, and marketplaces like Google Play and the App Store not wanting to enable competing marketplaces within the apps they distribute. It's a tradeoff to be sure, and I'm not sure moving past plugin functionality is a bad thing, but I find it a bit sad.