I disagree. DLP resin printers use what can be described essentially as a UV beamer. The DLP IC is called DMD - digital micromirror device. It is what it says, and contains lots of micromirror that can direct the light. The resulting image projected onto the FEP film on the resin vat is quite sharp. They also require little power without affecting the exposure time.

Normal resin printers use a UV LED array with lenses to produce a more or less uniform light field. A display is then stuck underneath the vat to block light at certain spots. Since there is some distance between the display and the resin inside the vat, the resulting image has a slight blur on the edges; I think isn't an issue and is countered by using high resolution displays.

However, they consume a lot more power and require active cooling.

The display on a LCD resin printer has a limited lifetime, while the DLP is rated for 20000h. Being able to focus the image on the resin also allows for using arbitrarily thick (and thus stable) glas plates, while on a LCD the distance between LCD and resin needs to be minimzed.

Mind we're talking about a device that costs 4500US$ (before taxes).

Or am I missing some good reason to use a LCD display over a DMD in that device class?