This is what I was going to say.
In the late 1800s when Jasper Cropsey was exhibiting landscape paintings in the UK, folks didn’t believe that his colour palette was accurate
https://collections.brandywine.org/objects/2656/autumn-on-the-brandywine-river
Neil has never resembled a Conservative. When he holds a position you can assume it’s backed by facts.
Ideally you want to put a fan in the ceiling and then duct as straight as you can out of the room. If your joists are running perpendicular to the wall you should be able to find a space that isn’t too bad to go straight out the wall. If you don’t want to cut into the ceiling, or there just isn’t enough space, Broan-Nutone also makes through-wall fans that are about as simple as it gets, this is what I have in my kitchen, and a lot of old homes have.
I slit the sheet, the sheet I slit, and on the slitted sheet I sit.