I'd assume that it's just that it's such an old house, it's a bit drafty and it shifts in the wind and that's what causes the phenomena, but who knows?

That’s a recent phenomena in SF RE.

Have any of you investors ever seen this phenomena in your city?

yes and it's also the same phenomena in Asia too.

There are so many other self limiting phenomena, why would you get all hung up on if you own too much rental property First you have to 1500 doors to even find out it you have too much income theorizing about has little value.

In fact, it's a well known phenomena for newbie investors in general. 

All you need do is find a conservative friend and ask if you can read their Facebook feed, talk to their friends, listen to their radio, or whatever flips your pickle.Of course we can't blame Disney's downturn completely on this phenomena, there are other factors at play, as you noted.....but to ignore and ridicule this as you and @Ryan Moyer have done is just silly.

However, this seems to be a phenomena mainly in RE investing.

I understand the tourism-growth phenomena well, having lived in Florida and now outside Aspen.

Here is the dictionary definition of correlation: a relation existing between phenomena or things or between mathematical or statistical variables which tend to vary, be associated, or occur together in a way not expected on the basis of chance alone.