Anecdote- most of my skilled friends working in chip fabs jumped over to software jobs a few tears ago. Software pays better for easier and significantly less hazardous work.
this is actually a huge issue with a lot of important jobs in america - they aren't valued commensurate to the work and value.
So many fields that require high skills and a lot of education pay far too little compared to software/analytics. One works just as hard but the pay is not comparable - it doesn't make economic sense to do a lot of the non-software jobs.
I would have thought the buildout of the facility would take long enough for TSMC to set up and begin a comprehensive training pipeline for workers, but apparently not.