I wouldn't be too hard on him.
Notice this happens soon after Elon moves on Twitter and threatens to remove the left's censorship monopoly.
My guess is the deep state has a bunch of this kid's secrets and is blackmailing him to ID as a tranny or else they'll reveal those secrets.
Once they have their claws in you they can make you do anything
It doesn't seem to make sense trying to forgoe the inheritance but if Xavier had done something bad enough he thought Elon would disown him anyway, it's not a loss.
Could be any variety of things, like maybe they have a foid ready to accuse him of rape, or have the history of what loli manga he browses, etc.
This kid might not even want to be tranny at all but is being forced to push that narrative by the jews to harm his dad.
Xavier Alexander Musk (now legally renamed as Vivian Jenna Wilson) has also been raised by his mom who divorced Elon back in 2008, it's been 14 years since then so Elon hasn't been able to protect this kid or guide him since he was FOUR years old. Contact has been limited since then due to shared custody.
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The other twin brother born in 2004 (and they also triplets in 2006, guess fertility treatments work) hasn't gone down this path, so I expect Xavier/Vivian wants to be set apart from twin by acting differently.
I don't know if that necessarily means tranny-differently though.
NGL in the early photo does seem slightly more effeminate (look how orange short bro is standing normally while blue-shorts Xavier lifting leg like foid) but that doesn't necessarily mean homosexuality or transgenderism.