It was a bad take. Intel has not been using TSMC long.
That said, it's pretty broadly agreed that Intel needs to toss its manufacturing arm into a subsidiary, and then possibly make that subsidiary completely independent. That's what AMD did with Global Foundries, and it worked very well for them. This process seems to have already started at Intel.
This is the actual problem with these types of retirement plans, though. People are expected to know a lot about managing the investments themselves. There's a whole industry whose job it is to give you bad advice. The real advice is "drop it in a mix of an sp500 index fund it and bonds according to your risk level" and the rest is bullshit.