Keep in mind, the market is what the market is. Very seldom in history has the housing market been a bubble. Notably it happened recently (2008), but that was a rare occurrence.
With the lack of new houses being built since 2008, there is a pent up demand and that won't be resolved anytime soon. Also, far more education out there about becoming landlords. The idea of buying property to rent it out has never been less scary for first time investors.
If you want to be in the game, you need to buy at current market prices. Either that, sit on cash, or invest in the stock market which currently has a PE of 22 something. (Earnings of $2 per $44 stock spent = 4.5% returns). Or find something else that provides better value.
For longtime investors, the rules of purchasing from 2008-2013 aren't going to apply again for some time.
That doesn't mean current market is insane. Just means more people are willing to take lower returns, or more people are willing to bet on appreciation.