This is very nice, though overkill IMHO
Aciddoblue is obviously using Lawsy's carriages which have a printed nozzle mount for the underside of the X carriage here
In his/hers defense, you don't need much airflow to impact layers; especially with PLA and no enclosure. So corrugated tubing isn't the best option for very fine prints, but it will still help.
With Aciddoblue having only two posts and a heavily modified printer, I would like to say welcome to the forum!!
Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!