Depends how many people, but don't forget that:

1) people like me exist: I don't live in the USA, yet it is possible for me to buy things which are made in the USA

2) fiat money is only created or deleted by laws the government controls (plus a tiny quantity from forgery and damage to coins and notes), so everyone losing their jobs doesn't make the money disappear, just who has it available to spend

3) previous waves of automation have created new business opportunities; while this has not been too good for the people who lost jobs to the automation, it has generally boosted the overall economies this happened in, so it is absolutely possible to wipe out tech employees without it seriously harming consumers collectively