Sorry, but I don’t see how the reduction of the entire human population to 10,000 could possibly be moot.
What happened 60,000 years before the period under didcussion is moot. Do you have any idea how long 60,000 years is? The entirety of our known civilization only goes back a mere 8,000 years.
Whatever genes existed in the pre-Toba population which do not exist now is unknown. Those putative missing genes are just that: speculative. They make no difference to human evolution. Moot.
And 10,000 survivors is a rather high number, the actual number may be only 2,000. The Late Pleistocene was a rough time for humanity.