I don't fully understand the logic behind there being more volatility at higher prices, in terms of dollar swings then sure but in terms of percentage swings I don't see how the higher price could lead to that? In fact I probably see more of the opposite, higher prices generally will mean more adoption, more adoption means money better spread means less possibilities for manipulation.
I'm curious what you actually see
Because if you looked at price charts you would certainly see the opposite picture. For example, when Bitcoin first reached the 6k dollar mark it crashed back to 4k, then it went up to almost 8k and corrected to 5.4k. Now we are at 15k, and how low do you think we will go? Further, there is no adoption of Bitcoin in real economy. Steam just dropped it. It is adoption between speculators, but I can't fathom how that could mean less volatility. In fact, it does the opposite