>>280240960
>That's what Priconne was too and it was the only gacha anime adaptation I've watched so I assume they're all like this as well
Your assessment is completely correct, the only exception I can think of is Takt Op Destiny, and that's purely because it's a rare case where the anime came out before the gacha. (It was supposed to be a prequel to it I think.) Coincidentally the gacha died nearly immediately after releasing, so that pretty much tells you everything about the audiences for these games.