Upfront:There is no medical threshold by which PTSD occurs.Clinical diagnosisinvolves observation and interviews with a medical professional.
Anecdotally speaking, PTSD isnt necessarily triggered in the manner which Al Olama indicated.
Other peoples diagnosis have come after entirely different experiences.

Deeper:You cant murder an avatar.
At least not in the legitimate legal sense.
Lets say, 10 years from now, youre wandering around in Metas version of the metaverse.
Your avatar bleeds out and dies.
You have to witness the knife going in!
But wait, lets rewind for a second.
How did the knife get there?
Who programmed the leaping out of the bush animation?
Are there more kill moves?
Whats the combo for a silent takedown?
Im getting ahead of myself.
I forgot, were not talking about a video game.
Were talking about murder most foul, in the metaverse.
Rock bottom:You may as well pass a law against murdering people in video games.
Sure, a hacker could hack some violence onto a server or find an exploit that shows violence.
And its possible some sort of underground mod scene could develop over time.
If you could murder people in the metaverse, itll be a feature that people access specifically to experience.
Quick take:Everything about the idea of criminalizing digitized violence in virtual reality is dumb.
This kind of blathering rhetoric just demonstrates how far detached from reality some technologists can be.
Nobodys worried about logging onto a VR version of Facebook and being murdered in their headset.