I had an ancient-ish Roomba (620, 11 years ago). The repairability was amazing. This was from back when there was little competition, but just 2 years ago I could still get every part replaced. Only screws, nothing else. It was beautiful. I got a new vacuum/mop now, vastly better functionality, in exchange for the cloud, but I'm glad my old one lives one at my parents.

I've read it's way worse nowadays, but if they stayed at their quality from back then, I'd have probably paid more for an offline workable repairable vacuum.