Yup.
If your multiple selves already exist (plus all your multiple 'not selves' - all the other eggs and sperm that could have collided, all the other people your parents could have met, etc and so on...) and you're not aware of any of them, there is no reason to think that that would change in death - except for a yearning to continue living, somewhere.
This may be a simple confusion between 'self as actor' and 'self as observer'. That is, there may be multiple versions of you out there 'acting as you' in some way, without your awareness, but that does not give you access to their thoughts and eyes.
I find that reflection interesting. Would you regard yourself as continuing to live, if the 'essence of you' was identified and coded into a robot that behaved and reacted to events in the way you would have? That is in effect you persisting and playing an active role in the world. Or, would you regard yourself as continuing to live, if your consciousness was implanted into a passive medium, so that you only observed? Or both, or neither?
Anyway, the OP's question is the sort that relies upon a strong academic background in philosophy or physics to engage with meaningfully at all. The rest of us can merely speculate pointlessly from a position of flat-earthish incomprehension. Fun and mentally stimulating but meaningless. (Much like our lives, ha ha!).
Maybe some of those tiktokers and their followers will become interested enough to pursue their interests through education. That would be positive. Maybe in 30 years one of them will have written the decisive paper on the topic!