In their defense, the Tokiko card was originally from special sale where you could buy a TABA artbook, daikimura or both. Buying any of those gave you the Tokiko serial card as an added bonus so you had to pay in order to get her.
Would had loved to see it be a special gacha for 5$ or something but they went with the usual 30$ price tag which seems pretty expensive as we don't get any physical products.
The official discord does seem rather lacking. It pretty much has the advantage that it's the official discord and is linked in game and on the twitter but the unofficial taba seems to be better in every way.
They even seem to redirect you to the website support when you have feedback.