My guess would be that either he felt it was such a monumental cockup that he had to off himself or his bosses thought it was such a monumental cockup that they had to off him.
It's called pooled hiring, and it makes sense when a company is hiring lots of people for lots of teams. Most large companies do this when hiring rates are high. You end up with better employee-team match when you interview a candidate first and then match them based on their skills/interest, rather than contacting them for a specific role they may or may not be interested in.
Has nothing to do with whether hiring is for headcount or other reasons
Also the idea that a country that has built the most extensive digital surveillance apparatus in the world will somehow avoid the temptation to use TikTok to monitor people abroad..
If they kept coming back, that means you never really exterminated the population, just got their numbers low. You need to make the population go extinct
Unless the new tenants brought a new colony with them. It's pretty common for people to have eggs inside their electronics and furniture when they move.