apparently irc has spoiler tags now (e.g. /format this is a ||spoiler|| in halloy), something the (non-x) element still does not have
(yes i know technically you can do /html this is a <span data-mx-spoiler="reason">spoiler</span>, and i even memorized this to type it off the top of my head, but to the majority of people the feature might as well not exist)
@whitequark do you know if this is resting on top of an IRC feature like a message tag, or is it all clientside?
@whitequark looks like it's probably client-side trickery that maps the common input convention to color codes that make the fg/bg colors the same (and interprets that as meaning a spoiler when receiving messages)
@SnoopJ i can't decide if i love or hate it