This is actually the second half of OPs comment. Fed greases the wheels, distorting the market. Those who can take advantage of it (VC funded companies) do so, which propagates the distortion. Everyone else pays up to find / keep talent, or closes shop. Fed reverses trend, the bubble bursts. Now we watch the market slowly correct.
The worst part here is a lot of companies were making real products, that customers really wanted and really paid good money for. But if those customer companies were VC reliant / vaporware, then even that strategy won't pan out. Only by predicting that and actively working to skip easy money and find more durable businesses, pivoting quickly, or having extra cash reserves.