Funny thing is that when the decline had been going for a month, people kept saying "well YTD is really what you should pay attention to.

Now the goalposts have moved to five years.

Note that after infamous black Tuesday in 1929, all the charts generally show the decline from one month prior. Black Tuesday didn't look as catastrophic if you looked at one year graphs. It would have looked positively rosy on a five year graph, despite being one of histories biggest financial catastrophes.