I initially thought this, but the technology from competitors like Roborock (I have the S7 maxV) gives me pause: their more modern vacuums not only recognize furniture and layouts, including the chair layout, couch type etc... but they also detect and categorize specific objects you have lying around (it can distinguish shoes, animals, cables, power strips, blankets)... that data seems pretty useful alongside ambient information like temperature inside the house to me. Yes, it's possible to disable these features–but the robot is less useful without them, and it seems unlikely the average user would understand the implication.
If you can figure out what type of shoes[1] someone owns or that they have kids/a dog based on all the toys lying around, there's plenty of ad/behavioral data for free basically.
(I love the Roborock vacuum I have, and would find it hard to give it up even if Amazon acquired them too–it's really good. Thankfully, they have a good privacy focus right now and do state that these features don't share information with the company/stays local to the robot right now).
[1] https://twitter.com/ow/status/1555588525982363648