When your core gameplay loop is all of 15 minutes long that feeds into a 40-60 hour repetitive grind to unlock a slightly better item, new title or recolored cosmetic, combined with a complete absence of quality or competent writing, innovative mechanics while it's apparent most of the budget went into marketing and pre-rendered cutscenes that can be just watched on youtube, yeah it's bad to give potential customers a 30 minute demo that displays everything your game is without hinting any additional benefit for purchasing the full game.