Agree completely, as I said their design priorities are cost and transportability, and they provide a valuable service. Mostly I hate the shitty laminated chipboard half their stuff is made from. If you replaced that with actual wood, and some of the weird aluminium pegs with actual dowels or joinery, it'd be fine. But that's kinda beside the point; if you did that it would be more expensive and less easily transported, and therefore wouldn't fit their priorities.

And, of course, their bedside cabinets are the wrong size for my wife's bed, so I'd have to make one anyway.

And this is just an analogy; if you like Ikea-style Google Search, then great for you. I pay for Kagi because that Ikea-style Google Search doesn't work for me.