This kind of thing is exactly what (possibly collapsible and/or hideable) sidebars are for!
I think this sort of thing makes me want to have threads that appear until they’ve been engaged with or toggled off. (Maybe make this true of stickied threads in general: give people the option to click ‘cool I’ve seen this and don’t want to engage with it anymore’)
This kind of thing is exactly what (possibly collapsible and/or hideable) sidebars are for!
This seems like a good idea to me.