> Most of the people working on software these days barely know what RSS is
Using my experience from a Polish university from a field of study focused on computer science: Most of my acquaintances know what RSS is. Several of them use it, and way more at least tried. Granted, it is not something nearly as popular as Facebook, Discord or other similar software, but to say no one know exactly what RSS is seems unlikely to me. Maybe it is simply a situation around your peers? Seeing that even Vivaldi browser added built-in RSS support lately, it seems that people that remember RSS are still common enough.
Using my experience from a Polish university from a field of study focused on computer science: Most of my acquaintances know what RSS is. Several of them use it, and way more at least tried. Granted, it is not something nearly as popular as Facebook, Discord or other similar software, but to say no one know exactly what RSS is seems unlikely to me. Maybe it is simply a situation around your peers? Seeing that even Vivaldi browser added built-in RSS support lately, it seems that people that remember RSS are still common enough.