Of course it's easy to cherry pick in hindsight. But we're talking about people with cash right now, they are investing at current valuations not valuations from 6 months ago.
Your argument always assumes you pick a point in time and never consider new information or fundamental information. Such as, there were less computers doing things in the world yesterday than today and there'll be more tomorrow. Seems like a reasonable investment over the medium term.
You would have to wait for stocks to double to break even, which can be a long time.