Given how relatively painless it is to respec I'm personally open to the idea of locking specific builds out of specific content as long as such content was uniformly distributed and made thematic sense; I do think the design in this specific case is a bit awkward, though. Because neither of the two stats being checked are the stat that's relevant to the reward for the stat check, it's really more of a 3 stat check (since only PCs with willpower and cunning can access the reward, and only PCs with presence will use it). This is not punishing some builds as much as it is locking the reward behind either one specific build (or at least builds within one drink's proximity of it) or forcing a respec.
From a gameplay optimization standpoint that wouldn't be as big a deal if it was a summon reward that demanded the PC spec in a way that a summoner would be, but that's not what's going on here. Since the spell-charm split and stat change in 0.7.33 the cunning/willpower/presence stat spread has been rendered more or less obsolete; dedicated summoners now have access to "spells" (charms) that scale on the same stat as their summon, so no longer have any additional need for willpower. Tank builds that might want a summon option by virtue of being heavily presence/leadership invested already don't need cunning, and are now actively penalized for taking it by the change to make cunning reduce base threat. Burst/nuke and buffbot PCs already had very little reason to invest in presense over agility, and taking away the HP from presense while leaving the initiative on agility (which is the reason these builds want it, the accuracy is secondary) only reinforces that.
This might just be the latest chapter in the ongoing design confusion about what, exactly, the Black Mage class (the one that nudges the player toward suboptimal cunning/willpower/presence investment) is for, since thief can do more damage with spells and charmer with summons. In the meantime I think some "raise-[stat]-to-match-[other stat]" or "maximize [stat] for dialogue and quest purposes" wearables suddenly turning up in kohaku's warehouse etc would be a relatively painless bandaid to implement.
