This is a perfect example as to why randomly powering up cantrips doesn't work.
In PnP Mage Hand is almost entirely a utility cantrip for carrying small items, opening doors etc. It can't move anything of more than 10lb weight and doesn't have many combat applications (you can use your action to have the hand move 30 feet and open a flask of alchemists fire for example) unless you are an Arcane Trickster Rogue and even then only in certain circumstances (AT Rogues can use it as an ally for advantage purposes or have it steal or plant an item in an opponent's pocket using slight of hand).
By giving Mage Hand the additional capability to shove (and implication massively stepping up it's weight limit on interactions) it has been boosted quite a lot and in fact steps on the toes of a number of other spells (e.g. Gust of Wind and Thunderwave), but most egregiously it entirely co-opts one of the main elements of Bigby's Hand. Bigby's Hand is a 5th level spell that creates a large phantasmal hand that you can manipulate allowing you to use oen of 4 different bonus actions on your turn while it persists. One of these is Bigby's Forceful Hand, which moves a creature within 5 feet of the hand in a direction you choose (distance moved is 5 + (5 x Spell Mod) feet). It seems insane to me that a cantrip can reliably mimic even a quarter of a 5th level spell and is one of the reasons I am extremely leery of all of the changes to cantrips that Larian have made.
For the Githyanki version, this is entirely RAW as the Gith get a bunch of 'psionic' powers as a part of their racial abilities, it is supposed to be invisible because it isn't actually a hand but a type of telekinetic manipulation. Basically if Mage Hand did what it was made to do then it wouldn't be an issue but because it has been buffed and because they have implemented the fluff surrounding the Githyanki version of Mage Hand as written it overall makes it far too powerful.
That said, as you can tell from above I am generally of the opinion that most of the buffs to the cantrips need to be retconned as they make them far too powerful, in many cases mimicking or overwriting elements of far more powerful spells, I mean why cast Fireball and expend a 3rd level slot if in most cases Firebolt + environmental patches does the exact same job without the sunk cost of a spell slot.
