I'm replying to myself here because I recall lots of people saying they are waiting for 10k, and I was one of these guys as well, and ended up chasing the price much higher. At 20k I bought very little, and at 30k, I hated buying more because now I got half as much as I would have at 15k.
And then when I got more money, after it broke out above that 50-52k range, it never looked back, and I missed putting all my chips in then. I chased all the way up to the 60's to be honest. Now 16k was over a year ago, so most of my entries the past year weren't possible since there was no money at the time of the 15.5k low, but I remember a very good quote I read a while ago that DCA is great in a bear market, but inferior in a bull market. which requires an all in approach.
If we don't make it down below 60k (there is that obvious low at 59k that could break or be front run), then many people will likely not start scaling back in until close to 70k, if not higher. So for them, getting out at 69 or 68 when you said it wasn't looking good might not in fact have been the good play. But I certainly agree that if you can have a process where you miss the 10-20% drawdowns, and always get in for a better price than where you got out, you will do better.