Picking one of multiple definitions from the OED when others exist is disingenuous. ostentatious, adj. Of actions, events, qualities, etc.: performed, exercis

Picking one of multiple definitions from the OED when others exist is disingenuous. ostentatious, adj. Of actions, events, qualities, etc.: performed, exercised, or displayed in a manner calculated to attract attention or admiration One of the examples is: “He gave an ostentatious yawn.” So, sure often it’s used in the context you’re referring to but that doesn’t mean any use is limited to that context. > For example, is any attempt to attract attention ostentatious? Attempts to grab attention are inherently a transgression, remember kids in school being admonished for attention grabbing behavior? Raising your hand is an attempt at communication, raising your hand and waving wildly it is an attempt to “gab attention” there’s a difference. Advertising blockers removes even pure text advertising because grabbing attention is inherently a transgression. But, we don’t classify all transgressions as problematic. Someone breaking the speed limit taking someone to the hospital in a major medical emergency is generally accepted though not if they’re doing 190 MPH. A wedding dress has more leeway to be ostentatious than most outfits, but the line of acceptable has moved not been removed.