So the dynamic you attributed to ZIRP is alive and well, just wearing different clothes. Your original framework was "ZIRP allowed this, now real capitalism is correcting it." Now it's "this is permanent, it just rotates themes." These are different arguments.
> "Investing in a Ponzi can still be profitable as long as you get out before it collapses... a VC can rightfully determine something to be a scam, but still invest"
You've just moved the con from engineers to VCs. If investors knowingly played hot potato, then engineers weren't running a grift, they were employees doing jobs while capital played musical chairs above their heads.
So which is it: were engineers "deadweight" padding out finished products, or were they ordinary workers caught in a game VCs were knowingly playing? Because "VCs knew it was a scam but invested anyway" is a very different story than "engineers tricked everyone into thinking the product wasn't finished."
You're retreating into "everyone knew it was fake."