Literally the only reason people respected transcendants when they were introduced was due to their cool, unique obtainments. Bone blossom? Final reward from a questline, challenging but guaranteed. Maple Resin? It's from a shop, sure, but each restock gave you chances to get other fall-shop things too. Weeping branch? Dead tree quests were atrocious for sure, but that sense of accomplisment when you finally got it (applies to bb and MR too)....
Unfortunately seed shop transcendants are boring and have zero-hype. There's no grind, no challenge, no fun in getting them, literally just wait-until-they're-in-stock. The limited ones especially cause intense community outrage. Aside from that, do we really want transcendants to suffer from the "prismatic slop" issue?