Using your Reddit custom search site of choice, search “bubble” in posts 2019 and earlier.
From my personal browsing, it’s interesting seeing the exact same kinds of posts you see today, just maybe not as frantic. Blaming rising prices on FOMO, overseas buyers, interest rates, etc. People holding off on buying because the market is too crazy right now (RIP). People predicting a crash in a year, people giving the same advice against timing the market. Of course it doesn’t mean that people who are posting that stuff now are wrong.
What was even more interesting to me was how if you go back in time far enough, you see fewer posts about the national bubble, and more posts about a potential California-specific bubble. Which fuels my personal theory that the current national spike in prices is in large part a result of California exporting its housing crisis to the rest of the country, as people priced out are choosing less expensive areas to live in.
If/when there is a correction, I wonder if you’d see the effects start in California first, then ripple outwards like the housing crisis did? Or if it will be more like the tide going out again, as prices slow down or decrease in the least desirable areas and the effects hit California last.