AirTags are on the market for eights months, the Android app was announced seven months ago and released a week ago.
Perhaps you’re thinking of Samsung? They released their smarttags eleven months ago, announced a checking feature (pull) in their smart things app which only works on galaxy a day before apple announced AirTags. At that time the self-revealing feature of AirTags had been known, though.
Just checked april 20th comments I read in tech forums where people lauded Samsung efforts and got told that apple would have this in start, so Samsung was reactive, not proactive.