I did not run into that same bug ever since, so I think that was just an unfortunate coincidence, but the game is far from stable in terms of card interactions
Like most Pokmon cards, the value of Miraidon depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Scarlet & Violet Black Star Promos)
Its a cheap alternative to some of the expensive doublers and could be effective when looking to fill out the deck with this effect
Counter trap cards are usually used in response to other cards, e.g
Antinomy was sent to the present, where he guided Yusei Fudo to learn Accel Synchro Summon, before eventually suffering amnesia during an accident and befriending Yusei and Team 5D's under a new amnesiac guise as Bruno