I don't know about "shady", but they definitely have different priorities than the market, as can be seen by the price differential.
I'm curious to see how high it could go, I was one of those lazy people who didn't bother selling it off. I'd love to sell soon, before the inevitable crash back to reality, but it already has more life than I expected. Can it hang around as a decreasing percentage of ETH forever, while going up slowly?
I will humbly suggest you to get rid of eths you keeping in your wallet as soon as possible avoiding any big loss. Eth is not capable of generating any good profits for its investors and thats the only reason I never invested into eths. This project lacks some important features to attract people around the globe.