I voted yes, but it really depends on the asking price. Chronometers are supposed to be the best quality level of a movement regulated to the tightest tolerances. We pay a premium for things such as better bracelets and straps, sapphire crystals, higher levels of fit/finish, etc so why not superior movement as well?
I cannot think of many watches that offer a choice of movement level "a la carte." Invicta's Reserve line includes a ton of significant upgrades to their Swiss Pro Diver including improved water resistance, thicker sapphire, better bracelet, higher degree of fit/finish, and cosc movement for around $400 more. The movement isn't worth that price increase to me, but coupled with the other upgrades, it is a steal IMO. I'm not even sure you can buy a Rolex dive watch that is not a chronometer, so how can you tell what kind of premium you paid for cosc status?
Cosc may be "window-dressing" for an antiquated technology, but on the other hand the chronometer represents watchmakers never-ending attempts to perfect the mechanical movement. While it never will tell time like a quartz, it offers the pinnacle of achievement for the technology... a technology that goes back centuries, not decades.
Ultimately, it is a personal choice.