A market correction wouldn't be that surprising in general, but keep in mind a bubble and a correction aren't the same thing. Plus, and maybe more importantly, even know a correction could occur without knowing when isn't actually actionable information (could be tomorrow, next year, or three years from now, and you would lose money if you react at the wrong time).
So people saying we're in a bubble/correction is due, what action would you have people take? If the answer is "nothing" or "I don't know" then what good is that?
People can obviously do whatever they want as long as they're aware past performance...blah...blah...don't invest more than you can lose...blah.
I've pulled out from everything with a rich P/E ratio and am only keeping money in companies that I feel are a) stable and b) have a reasonable-to-low P/E ratio.
My thought is that new investors tend to go for well-known companies or meme stocks, but either way driving up the P/E ratio. I don't want to be caught in the downswing when these investors leave.