Most of the badges in game have always had near zero value. People keep macroing arena and getting paid for spots, others get carried in timed maps, seasonal, hardcore lbs, etc. Even event badges just meant that the player had lot of free time (and determination, lets grant this), not much else.
I don't see the big deal on players getting badges as tier reward, this ursoth platinum tier takes more effort than some of the examples i mentioned.
If you own previous event badge, it won't lose value. Maybe opposite since was "harder back then".
If this still bothers you, hide badges in settings and move on. Its a game