Not unreasonable at all dude. I couldn't agree more.
IMO they're doing us a huge favor by offering the upgrade option. For everyone who whines about this, are they supposed to offer new and better tech for free? Are they not allowed to try and make improvements? This is business. Think about the downside if there weren't an $1,000 upgrade option... Initially you would buy HEKv2 for $2,500 or so then sell it used for what $1,500? Then you take that $1,500 from you sale and have to pay an additional $1,500 - $2,000 on top of that (plus tax) for the HEKse. And if you wanted to pay less then you'd have to buy a used pair of HEKse. So I'd argue there are three significant and obvious benefits to the $1,000 upgrade option directly from Hifiman: 1) Saving us the hassle of having to find a buyer for our used headphones 2) Saving us $500 (and that's a conservative number) or more on the upgrade cost 3) We get a brand new in box headphone.
I'd much rather them keep trying to improve their headphones and offering us an upgrade rather than them not making any improvements just so we don't have to face our own GAS! If someone's budget is topped out after buying the HEKv2 don't hold that against Hifiman... plus the HEKse retails for more than the HEKv2 anyways, so you would have been paying more money for it one way or another. Don't slap the hand that feeds you!