What the heck is this crap again!? I thought that the 2.81 outliner behavior was finally fixed to be sane?
When a person has more than one object selected in a program, they would reasonably expect that ANY OPERATION would affect ALL SELECT OBJECTS!! (And that includes things like “shade flat” and “clear custom normals data”, etc, etc.)
(I know you still have to hold Alt of some crap to get any input field to apply to everything selected, and that’s still absolutely insane. The right-click mentality of the old Blender guard has to go! Face it, you lost. The industry established the conventions without you, and you need to get on board already.)