Faolyn
(she/her)
You shouldn't need to add magic items to break that arbitrarily-imposed glass ceiling.You seem to be making several false assumptions here:
1.) Assuming that supernatural effects cannot remove a cap. In the contrary, this is what Girdles of Giant Strength have always done: allowed superhuman feats of strength that go beyond normal limits (ability "cap"). Getting blessed by a god of strength or eating the berries of a Power Tree, etc. falls under this category: exceeding the cap.
I'm pretty sure most GMs assign stats to NPCs. So yes, I'd say that 99.999% of the time, only PCs roll stats, and every single one of those female NPCs can have their Strength lowered by the GM's fiat.2.) Assuming that only PCs exist or roll stats. "Second, all your examples are already going to be extremely rare because they will be limited to the PCs," you say, but this isn't true at all. NPCs play by the same rules as PCs in these sorts of games--it's not uncommon for one character to flip back and forth between PC and NPC depending on the situation, but the stats don't change. If Holga the Barbarian dies and the DM tells Holga's player to take over Bob the Lanternman for the rest of the session, Bob doesn't suddenly grow superhuman muscles... but at least the player is still participating in the roleplay and dialogue.
And your statement doesn't make any sense. Why would the stats of an NPC change if the PC takes them over? The PC isn't rolling that character up. But a player who is rolling up a character should have the opportunity to roll an 18 Strength, regardless of the state of their fictional chromosomes.
Sure. Now go ask all those other men who think that women should have their Strength capped if they'd be OK with male PCs being limited in their Dex, Con, and Wis. Do you think they'd think it's fair and realistic and not sexist?3.) You're assuming that I'm not okay with sexual dimorphism when I already showed you by example that I am. In my example it was a Wisdom cap (in part because women tend to have better occipital lobes = better night vision = better Perception checks, but I'm not married to that choice), whereas you're conjecturing that I'd be averse to a Constitution or Dexterity cap--on what grounds? As long as it's realistic it's fine by me.
I think you're assuming bad faith where there is none.
(Also, your Wisdom example is dumb. Men have better vision in some ways, women have better vision in others; the differences are minor enough that there's no way to reflect them accurately in D&D, or indeed, any other game)
I think I'm not assuming from bad faith, but extrapolating based on the sexism involved in this decision. Most men who think that female PCs should have their Strength capped are doing so for stupidly sexist reasons. Real humans don't have Strength scores; our physical capabilities is a mixture of many different types (various sites I've gone to have listed combinations of maximum strength, explosive strength, endurance strength, reactive strength, agile strength, and speed strength) and D&D Strength doesn't exactly correlate to any of them completely, and certainly not in a way that means one character is 5% better at everything than another character is.