I couldn't remember exactly who is standing by the portals in the Temple, but it is indeed a portal trainer, a human mage. I don't think, then, that the portals are intended to be non-arcane. Unless the shaman or paladin trainers did it. Maybe when their powers combine...
Another misconception is that men were/are looked down upon in Night Elf society. This was and is not the case.
This is not true, or at least what you're trying to say is not true. Any time you have to say:
Because the gender roles have been lifted, males can become Sentinels and priests,
it implies that men were "looked down upon". They were not "allowed" to participate in the activities the cool chicks were doing, thus they were, by very definition, second class citizens.
I don't have a clear understanding of why the gender restrictions existed. Is there an explanation for them, or is the lore behind it "that's just how it was"? In the absence of that explanation, I'm not sure I can agree with certainty that it is proof either gender was technically discounted by the others in this regard.
If they just believed, say, that Elune only obliges women with her blessings, or that only men can commune with nature for druidism, that's not necessarily seeing either gender as social lessers. That is, in the same way someone might rattle off, "only women can get pregnant," if the belief is that it's just not possible, it's not strictly a gender bias. If they believed something more along the lines of "men don't have the discipline for the priesthood", that is a more obvious bias.
Anyway, I think the original remark was about the idea that Night Elves are under a fully male-oppressive matriarchy, rather than that they are and have been completely free from gender biases as a society. We, ah,
do have some dudes who hang around Darnassus looking to be dominated.