May I get a link to that video and timestamp? If not a link, the title of the video? I might have missed it. Thanks again!
I remember they were talking about playable species and creature types in the video New Fey | 2024 Monster Manual (around 06:35). This is the transcription of that part, where gith are indeed mentioned:
[...] when it comes to playable species there is a dividing wall in our design between playable species on one hand and monsters on another. It's really important to remember that each individual stat block represents sort of a either just one monster or a number of monsters like it within a larger family, and this is particularly clear when you have a group that has multiple stat blocks because if you go to say Goblin in the Monster Manual right there are a bunch of stat blocks that all do different things which communicates very clearly no one of these stat blocks represents all Goblins.
It can be tempting sometimes if a monster has just one stat block to think every monster in the Multiverse of that type is exactly like this. Not true. As we again show often in later books we'll release variants and because every DM can make more variants, we always view that there's essentially an infinite number of potential versions of any one of these creatures.
Over on the player side, player character design is not in any way guided by what we do with monsters. You can see this with throughout fifth edition where the playable version of a particular kind of creature will often have abilities that don't show up in stat blocks for creatures that are of the same species and so the two basically again they're separated in the design and we've also shown in books like Monsters of the Multiverse that there are also certain types of creatures where over time in the Multiverse their creature types have actually also varied where you'll have a monster where most of the stat blocks are of one creature type but the playable species is another creature type.
Right in the Player's Handbook we have an example of this sort of narrative phenomenon in elves. Many of the elves' elder ancestors were Fay, but the playable elf in the Player's Handbook is humanoid, and the reason for this is when you are playing the elf species from the Player's Handbook you are specifically playing an elf descended from elves who have been in the Material Plane or another non Fey world long enough that some of their fayness has gone away, and they have they have become humanoid.
[...] Gith are playable thanks to Monsters of the Multiverse, there are also humanoid Gith in the Multiverse just as there are now aberration Gith in the Multiverse and that distinction isn't just a game mechanical distinction, but also a narrative distinction. That creature type differentiation actually is a signal to you that the Gith who is humanoid that's a Gith who has been most likely away from the astral sea for most of their life and perhaps never lived there, and so any creature type changes that we have made in the Monster Manual have no effect on playable species particularly species that people might be playing from Monsters of the Multiverse or elsewhere, but then also people are going to see that we are going to over the coming years introduce more playable options that aren't humanoid and we have some fun stuff coming that demonstrates that [...]
Some monsters got new classifications like Kobolds are Dragons now, Gith are Aberrations.
Does that make a Player Char Gith an Aberration too? Or a Kobold into a Dragon? Is there a sage advice, errata or tweet about this?
No — player character species are still whatever creature type is listed in the species description. The monster stat blocks having a different creature type doesn't override that.
I don't think we've seen a solid in-universe rationalization for this, but I think the rules on it are clear.
Some monsters got new classifications like Kobolds are Dragons now, Gith are Aberrations.
Does that make a Player Char Gith an Aberration too? Or a Kobold into a Dragon? Is there a sage advice, errata or tweet about this?
This topic was discussed here: Are Player Gith Still Humanoid or Would That Change? - Rules & Game Mechanics
Let me add here my answer if it's helpful:
No — player character species are still whatever creature type is listed in the species description. The monster stat blocks having a different creature type doesn't override that.
I don't think we've seen a solid in-universe rationalization for this, but I think the rules on it are clear.
pronouns: he/she/they
you ninja'ed me this time
pronouns: he/she/they
Because it was an error storing the timestamp in the DB :D
In any case, your reply was so good, Speedy Dance Bard!