401ks are like ~10% of the stock market: https://theirrelevantinvestor.com/2020/10/25/who-owns-the-st...

Boomer 401ks are probably <5% of the stock market, and they aren't going to 0 overnight.

The idea that boomer 401k withdrawals is going to crash the stock market or tamp out future growth is pretty strange.

Defined benefit & defined contribution pension plans are both larger chunks of the stock market than 401ks.

And all of those together are a smaller chunk than foreigner holdings.