Core XY printer With Build Plate Fixed

I saw this printer mentioned on a facebook forum & seems like this method having the build plate stationary is a better idea than having the build plate moving at all which is what the delta printers do also. Not sure if this is a decent printer or not, but I liked the idea. Are there other core xy printers using this movement method? Seems like all the ones I see have the build plate moving up & down.

https://www.aliexpress.com/item/2017-Newest-3D-Printer-East-3D-Gecko-Core-XY-Structure-diy-with-hot-bed/32824243243.html

Here is another corexy I found with a fixed build plate.

https://openbuilds.com/builds/corexy-w-fixed-build-plate-enclosure.2601/

And this page answers my question as to why you don’t see this much.

https://www.reddit.com/r/3Dprinting/comments/4pov7q/why_dont_i_see_many_any_fixed_build_plates/