There is no spectrum there, there no cases and can not be cases of both systems working.

doesn't have to be. Partsd of both being present is enough.

So that person is producing sperm or can produce and is not producing ova and can not produce ova.

while posessing features biologically meant to support ova.

same as there are people born without hands - it does not make human hands "on a spectrum"

well, technically they are. Humans can have 0, 1 or 2 hands, with 2 being the typical case.

And I am missing the point on finding out are they males or females. Those people deserve love and often need medical help and acceptance, not being used as "gotcha" to prove that "there people who are less or more males/females!", which leads to othering and hurts them.

attempting to shove intersex people into strict binaries hurts them, as that is taken as a pretext for subjecting them to involuntary medical intervention so that they better fit into the binary box.

And I am missing the point on discussing them in relation to transgender people - even if "they are different sex", this does not prove that someone born male can become female.

because with the conceptualization of biological sex as a spectrum, the perspective on what medical transitioning does changes. A transgender man starts (assuming no prior intersex conditions) as fully on the female side on the spectrum of biological sex. Hormone therapy (besides many other physiological changes) causes ovulation and menstruation to cease, meaning the process of relasing as well processes meant to support the gamete cease as well, moving the position on the spectrum away from "fully female". Hysterectomy (which for transgender men is often a necessity in the long run) then goes further on this, removing one of the fundamental biological features necessary for the support of the ova in a reproductive role. True, the transgender man is never going to reach the opposite side of the spectrum (e.g. starting to produce sperm) but with the "biological sex as a spectrum" conceptualization he is clearly no longer at the same place as he started at.