I have indeed contracted the festool parasite.
I own the domino DF500 and do use it for a majority of my builds, it definitely speeds things up! But when you have say 5/6 wardrobe doors to make up, glue up, wait for the glue to set, work on them, finish them and you're just one guy. It still takes awhile, the festool gear just gives you something to look at whilst doing it ahaha.
It's definitely this. If you can convince people well enough, you can sell them anything. The trouble is people have the option of finance with Wren, that is a big part of why they sell so much. No large upfront costs, it's all marked up to the eyeballs in profit and stuck on a pay later scheme. Wren are laughing to the bank because they're able to provide to the clients who wouldn't be able to buy something outright, or prehaps have sat on the fence about a new kitchen for years and finally have the option to afford one. The product they sell is absolute tosh, and often arrives damaged and needs to be replaced on deliverly, but they're still making a profit!
Marketing is a big play. If you look the part on the socials and seem to be doing well, everyone wants a part of it.