Well sure, once you have a little computer and suite of sensors on the thing there are a lot of incentives to add crap onto it because the marginal costs are so low. Imagine you a PM or mid level exec at Robot Vacuums Inc and you want to advance your career and get a nice bonus. If you can push to get some cool sounding new feature onto the new model you might get promoted or a nice bonus. It probably won't improve sales and the customers don't want that feature but it doesn't hurt sales either so its easy to see how these things prliferate.