>>722460Given that orcs are generally supposed to be significantly more durable than humans in most interpretations, it's entirely possible they never formed a patriarchy because lady orcs would be much less at risk of dying in childbirth and therefore having orc queens or whatever wouldn't pose the same risk to stability when it came to producing heirs (major chance of the monarch dying while trying to secure succession). Also they are so focused on strength it's likely that they wouldn't even have a genetic line of succession anyway and just allow whoever is strongest to take the lead, which would also remove the material basis for patriarchy since you no longer care about having a legitimate inheritance which is the motivation for controlling female reproduction so obsessively.
They would probably still primarily use male soldiers simply because you don't need as many males to achieve replacement or growth fertility rates, but they might develop some system where they trade around the fertile orc males based on perceived fitness in order to ensure there are enough baby orcs. If anything that would probably incentivize avoiding any kind of genetic inheritance tradition because then a minority of orc fathers would be claiming some kind of rights over their children. An actual full on matriarchy might actually make some sense in this context, with the males actually having a lower status as soldiers and sperm donors primarily.
>>722616Gimli says Dwarf women have beards too and outsiders often can't tell (not clear how serious he is) but I prefer the notion that any dwarf could be male or female and you just would never know by looking. Tolkien I think actually talks about dwarves having fewer female children than males and therefore being very careful to protect them because it poses issues for maintaining the population.
>>722622Dwarves are tougher than humans not so unlike orcs (at least if we go by typical stats given to them and tropes about them) so might be easier for dwarves than humans to give birth same as it probably is for orcs.
>>722661There's versions of both dwarves and orcs where they are asexually reproducing, and LotR even references this idea, with Gimli talking about dwarves allegedly popping out of the ground (which the movies show is part of the process of breeding Uruk-hai).